76668880 has 20 divisors (see below), whose sum is σ = 178255332. Its totient is φ = 30667520.

The previous prime is 76668877. The next prime is 76668901. The reversal of 76668880 is 8886667.

It can be written as a sum of positive squares in 2 ways, for example, as 24482704 + 52186176 = 4948^2 + 7224^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479101 + ... + 479260.

Almost surely, 2^76668880 is an apocalyptic number.

It is an amenable number.

76668880 is an abundant number, since it is smaller than the sum of its proper divisors (101586452).

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

76668880 is a wasteful number, since it uses less digits than its factorization.

76668880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958374 (or 958368 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 76668880 is about 8756.0767470369. The cubic root of 76668880 is about 424.8213874604.

The spelling of 76668880 in words is "seventy-six million, six hundred sixty-eight thousand, eight hundred eighty".