76688677 has 8 divisors (see below), whose sum is σ = 82688760. Its totient is φ = 70703040.

The previous prime is 76688641. The next prime is 76688701. The reversal of 76688677 is 77688667.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2056356 + 74632321 = 1434^2 + 8639^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76688677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76688177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9099 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (10336095).

Almost surely, 2^76688677 is an apocalyptic number.

It is an amenable number.

76688677 is a deficient number, since it is larger than the sum of its proper divisors (6000083).

76688677 is a wasteful number, since it uses less digits than its factorization.

76688677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223.

The product of its digits is 4741632, while the sum is 55.

The square root of 76688677 is about 8757.2071461168. The cubic root of 76688677 is about 424.8579492972.

The spelling of 76688677 in words is "seventy-six million, six hundred eighty-eight thousand, six hundred seventy-seven".