76686512 has 40 divisors (see below), whose sum is σ = 170227200. Its totient is φ = 32784192.

The previous prime is 76686509. The next prime is 76686517. The reversal of 76686512 is 21568667.

It is a super-2 number, since 2×76686512² = 11761642245452288, 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 76686512.

It is not an unprimeable number, because it can be changed into a prime (76686517) 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, 73289 + ... + 74327.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^76686512 is an apocalyptic number.

It is an amenable number.

76686512 is an abundant number, since it is smaller than the sum of its proper divisors (93540688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76686512 is a wasteful number, since it uses less digits than its factorization.

76686512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1707 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 76686512 is about 8757.0835327751. The cubic root of 76686512 is about 424.8539512010.

It can be divided in two parts, 766 and 86512, that added together give a palindrome (87278).

The spelling of 76686512 in words is "seventy-six million, six hundred eighty-six thousand, five hundred twelve".