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68876481 = 365335159
BaseRepresentation
bin1000001101011…
…11100011000001
311210121021202210
410012233203001
5120113021411
610500132333
71464304032
oct406574301
9153537683
1068876481
1135973a13
121b0970a9
131136731b
14920ca89
1560a7ca6
hex41af8c1

68876481 has 8 divisors (see below), whose sum is σ = 91978560. Its totient is φ = 45846032.

The previous prime is 68876453. The next prime is 68876491. The reversal of 68876481 is 18467886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68876481 - 26 = 68876417 is a prime.

It is a super-2 number, since 2×688764812 = 9487939269886722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68876481.

It is not an unprimeable number, because it can be changed into a prime (68876441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15621 + ... + 19538.

It is an arithmetic number, because the mean of its divisors is an integer number (11497320).

Almost surely, 268876481 is an apocalyptic number.

It is an amenable number.

68876481 is a deficient number, since it is larger than the sum of its proper divisors (23102079).

68876481 is a wasteful number, since it uses less digits than its factorization.

68876481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35815.

The product of its digits is 516096, while the sum is 48.

The square root of 68876481 is about 8299.1855624513. The cubic root of 68876481 is about 409.9117021832.

The spelling of 68876481 in words is "sixty-eight million, eight hundred seventy-six thousand, four hundred eighty-one".

Divisors: 1 3 653 1959 35159 105477 22958827 68876481