77668488 has 48 divisors (see below), whose sum is σ = 211052400. Its totient is φ = 25803360.

The previous prime is 77668471. The next prime is 77668499. The reversal of 77668488 is 88486677.

It is a super-2 number, since 2×77668488² = 12064788056412288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22203 + ... + 25461.

It is an arithmetic number, because the mean of its divisors is an integer number (4396925).

Almost surely, 2^77668488 is an apocalyptic number.

It is an amenable number.

77668488 is an abundant number, since it is smaller than the sum of its proper divisors (133383912).

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

77668488 is a wasteful number, since it uses less digits than its factorization.

77668488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602 (or 3595 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The square root of 77668488 is about 8812.9727107259. The cubic root of 77668488 is about 426.6596933539.

The spelling of 77668488 in words is "seventy-seven million, six hundred sixty-eight thousand, four hundred eighty-eight".