677505856 has 28 divisors (see below), whose sum is σ = 1363370400. Its totient is φ = 333979520.

The previous prime is 677505839. The next prime is 677505863. The reversal of 677505856 is 658505776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70006 + ... + 79093.

It is an arithmetic number, because the mean of its divisors is an integer number (48691800).

Almost surely, 2^677505856 is an apocalyptic number.

It is an amenable number.

677505856 is an abundant number, since it is smaller than the sum of its proper divisors (685864544).

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

677505856 is a wasteful number, since it uses less digits than its factorization.

677505856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149182 (or 149172 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 49.

The square root of 677505856 is about 26028.9426600467. The cubic root of 677505856 is about 878.2894872376.

The spelling of 677505856 in words is "six hundred seventy-seven million, five hundred five thousand, eight hundred fifty-six".