77345564 has 6 divisors (see below), whose sum is σ = 135354744. Its totient is φ = 38672780.

The previous prime is 77345551. The next prime is 77345623. The reversal of 77345564 is 46554377.

It is a super-3 number, since 3×77345564³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9668192 + ... + 9668199.

It is an arithmetic number, because the mean of its divisors is an integer number (22559124).

Almost surely, 2^77345564 is an apocalyptic number.

It is an amenable number.

77345564 is a deficient number, since it is larger than the sum of its proper divisors (58009180).

77345564 is a wasteful number, since it uses less digits than its factorization.

77345564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19336395 (or 19336393 counting only the distinct ones).

The product of its digits is 352800, while the sum is 41.

The square root of 77345564 is about 8794.6326813574. The cubic root of 77345564 is about 426.0675611215.

The spelling of 77345564 in words is "seventy-seven million, three hundred forty-five thousand, five hundred sixty-four".