77658468 has 24 divisors (see below), whose sum is σ = 182633472. Its totient is φ = 25681824.

The previous prime is 77658443. The next prime is 77658479. The reversal of 77658468 is 86485677.

It is a self number, because there is not a number n which added to its sum of digits gives 77658468.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23955 + ... + 27002.

It is an arithmetic number, because the mean of its divisors is an integer number (7609728).

Almost surely, 2^77658468 is an apocalyptic number.

It is an amenable number.

77658468 is an abundant number, since it is smaller than the sum of its proper divisors (104975004).

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

77658468 is a wasteful number, since it uses less digits than its factorization.

77658468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51091 (or 51089 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 51.

The square root of 77658468 is about 8812.4042122454. The cubic root of 77658468 is about 426.6413447971.

The spelling of 77658468 in words is "seventy-seven million, six hundred fifty-eight thousand, four hundred sixty-eight".