77634956 has 24 divisors (see below), whose sum is σ = 155613696. Its totient is φ = 33198480.

The previous prime is 77634941. The next prime is 77634979. The reversal of 77634956 is 65943677.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 77634956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10925 + ... + 16571.

It is an arithmetic number, because the mean of its divisors is an integer number (6483904).

Almost surely, 2^77634956 is an apocalyptic number.

It is an amenable number.

77634956 is an abundant number, since it is smaller than the sum of its proper divisors (77978740).

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

77634956 is a wasteful number, since it uses less digits than its factorization.

77634956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6149 (or 6147 counting only the distinct ones).

The product of its digits is 952560, while the sum is 47.

The square root of 77634956 is about 8811.0700825723. The cubic root of 77634956 is about 426.5982835827.

The spelling of 77634956 in words is "seventy-seven million, six hundred thirty-four thousand, nine hundred fifty-six".