76689684 has 18 divisors (see below), whose sum is σ = 193854570. Its totient is φ = 25563216.

The previous prime is 76689671. The next prime is 76689713. The reversal of 76689684 is 48698667.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 25280784 = 7170^2 + 5028^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 76689684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1065099 + ... + 1065170.

Almost surely, 2^76689684 is an apocalyptic number.

It is an amenable number.

76689684 is an abundant number, since it is smaller than the sum of its proper divisors (117164886).

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

76689684 is a wasteful number, since it uses less digits than its factorization.

76689684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130279 (or 2130274 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 76689684 is about 8757.2646414277. The cubic root of 76689684 is about 424.8598088941.

The spelling of 76689684 in words is "seventy-six million, six hundred eighty-nine thousand, six hundred eighty-four".