75712681 has 4 divisors (see below), whose sum is σ = 82595664. Its totient is φ = 68829700.

The previous prime is 75712669. The next prime is 75712697. The reversal of 75712681 is 18621757.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75712681 is a prime.

It is a super-2 number, since 2×75712681² = 11464820128415522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75712681.

It is not an unprimeable number, because it can be changed into a prime (75712621) 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, 3441475 + ... + 3441496.

It is an arithmetic number, because the mean of its divisors is an integer number (20648916).

Almost surely, 2^75712681 is an apocalyptic number.

It is an amenable number.

75712681 is a deficient number, since it is larger than the sum of its proper divisors (6882983).

75712681 is a wasteful number, since it uses less digits than its factorization.

75712681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882982.

The product of its digits is 23520, while the sum is 37.

The square root of 75712681 is about 8701.3034081108. The cubic root of 75712681 is about 423.0478981207.

The spelling of 75712681 in words is "seventy-five million, seven hundred twelve thousand, six hundred eighty-one".