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768113173 = 1933979861
BaseRepresentation
bin101101110010000…
…111101000010101
31222112100012012001
4231302013220111
53033114110143
6204115155301
725014566002
oct5562075025
91875305161
10768113173
11364641883
121952a5b31
13c319a149
14740288a9
154767914d
hex2dc87a15

768113173 has 4 divisors (see below), whose sum is σ = 772093228. Its totient is φ = 764133120.

The previous prime is 768113167. The next prime is 768113183. The reversal of 768113173 is 371311867.

It is a happy number.

768113173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371311867 = 419056387.

It can be written as a sum of positive squares in 2 ways, for example, as 55383364 + 712729809 = 7442^2 + 26697^2 .

It is a cyclic number.

It is not a de Polignac number, because 768113173 - 25 = 768113141 is a prime.

It is a super-2 number, since 2×7681131732 = 1179995693072255858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768113123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989738 + ... + 1990123.

It is an arithmetic number, because the mean of its divisors is an integer number (193023307).

Almost surely, 2768113173 is an apocalyptic number.

It is an amenable number.

768113173 is a deficient number, since it is larger than the sum of its proper divisors (3980055).

768113173 is a wasteful number, since it uses less digits than its factorization.

768113173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980054.

The product of its digits is 21168, while the sum is 37.

The square root of 768113173 is about 27714.8547353220. The cubic root of 768113173 is about 915.8163747308.

The spelling of 768113173 in words is "seven hundred sixty-eight million, one hundred thirteen thousand, one hundred seventy-three".

Divisors: 1 193 3979861 768113173