677377656 has 24 divisors (see below), whose sum is σ = 1834564680. Its totient is φ = 225792528.

The previous prime is 677377637. The next prime is 677377661. The reversal of 677377656 is 656773776.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4703940 + ... + 4704083.

It is an arithmetic number, because the mean of its divisors is an integer number (76440195).

Almost surely, 2^677377656 is an apocalyptic number.

It is an amenable number.

677377656 is an abundant number, since it is smaller than the sum of its proper divisors (1157187024).

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

677377656 is a wasteful number, since it uses less digits than its factorization.

677377656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9408035 (or 9408028 counting only the distinct ones).

The product of its digits is 7779240, while the sum is 54.

The square root of 677377656 is about 26026.4799002862. The cubic root of 677377656 is about 878.2340860855.

The spelling of 677377656 in words is "six hundred seventy-seven million, three hundred seventy-seven thousand, six hundred fifty-six".