77458668 has 48 divisors (see below), whose sum is σ = 217432320. Its totient is φ = 20965824.

The previous prime is 77458643. The next prime is 77458669. The reversal of 77458668 is 86685477.

It is a self number, because there is not a number n which added to its sum of digits gives 77458668.

It is not an unprimeable number, because it can be changed into a prime (77458669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22671 + ... + 25862.

It is an arithmetic number, because the mean of its divisors is an integer number (4529840).

Almost surely, 2^77458668 is an apocalyptic number.

It is an amenable number.

77458668 is an abundant number, since it is smaller than the sum of its proper divisors (139973652).

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

77458668 is a wasteful number, since it uses less digits than its factorization.

77458668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48566 (or 48564 counting only the distinct ones).

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

The square root of 77458668 is about 8801.0606179028. The cubic root of 77458668 is about 426.2751424069.

The spelling of 77458668 in words is "seventy-seven million, four hundred fifty-eight thousand, six hundred sixty-eight".