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768725901 = 3285413989
BaseRepresentation
bin101101110100011…
…101001110001101
31222120111022200200
4231310131032031
53033243212101
6204140244113
725023030246
oct5564351615
91876438620
10768725901
11364a20169
12195540639
13c3352cc8
1474147ccd
154774a986
hex2dd1d38d

768725901 has 6 divisors (see below), whose sum is σ = 1110381870. Its totient is φ = 512483928.

The previous prime is 768725899. The next prime is 768725911. The reversal of 768725901 is 109527867.

It can be written as a sum of positive squares in only one way, i.e., 580761801 + 187964100 = 24099^2 + 13710^2 .

It is not a de Polignac number, because 768725901 - 21 = 768725899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768725911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42706986 + ... + 42707003.

It is an arithmetic number, because the mean of its divisors is an integer number (185063645).

Almost surely, 2768725901 is an apocalyptic number.

It is an amenable number.

768725901 is a deficient number, since it is larger than the sum of its proper divisors (341655969).

768725901 is a wasteful number, since it uses less digits than its factorization.

768725901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85413995 (or 85413992 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 768725901 is about 27725.9066758871. The cubic root of 768725901 is about 916.0598272201.

The spelling of 768725901 in words is "seven hundred sixty-eight million, seven hundred twenty-five thousand, nine hundred one".

Divisors: 1 3 9 85413989 256241967 768725901