76870931 has 4 divisors (see below), whose sum is σ = 77457864. Its totient is φ = 76284000.

The previous prime is 76870921. The next prime is 76870933. The reversal of 76870931 is 13907867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76870931 is a prime.

It is a super-2 number, since 2×76870931² = 11818280065613522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76870933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293270 + ... + 293531.

It is an arithmetic number, because the mean of its divisors is an integer number (19364466).

Almost surely, 2^76870931 is an apocalyptic number.

76870931 is a deficient number, since it is larger than the sum of its proper divisors (586933).

76870931 is a wasteful number, since it uses less digits than its factorization.

76870931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586932.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 76870931 is about 8767.6069140901. The cubic root of 76870931 is about 425.1942475372.

The spelling of 76870931 in words is "seventy-six million, eight hundred seventy thousand, nine hundred thirty-one".