77000056 has 32 divisors (see below), whose sum is σ = 167712480. Its totient is φ = 32457600.

The previous prime is 77000047. The next prime is 77000069. The reversal of 77000056 is 65000077.

It is a congruent number.

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, 7855 + ... + 14686.

It is an arithmetic number, because the mean of its divisors is an integer number (5241015).

Almost surely, 2^77000056 is an apocalyptic number.

It is an amenable number.

77000056 is an abundant number, since it is smaller than the sum of its proper divisors (90712424).

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

77000056 is a wasteful number, since it uses less digits than its factorization.

77000056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22615 (or 22611 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 77000056 is about 8774.9675782877. The cubic root of 77000056 is about 425.4321896465.

The spelling of 77000056 in words is "seventy-seven million, fifty-six", and thus it is an aban number and an uban number.