1677632856 has 32 divisors (see below), whose sum is σ = 4251539760. Its totient is φ = 551549952.

The previous prime is 1677632849. The next prime is 1677632893. The reversal of 1677632856 is 6582367761.

It is a junction number, because it is equal to n+sod(n) for n = 1677632799 and 1677632808.

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, 477025 + ... + 480528.

Almost surely, 2^1677632856 is an apocalyptic number.

It is an amenable number.

1677632856 is an abundant number, since it is smaller than the sum of its proper divisors (2573906904).

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

1677632856 is a wasteful number, since it uses less digits than its factorization.

1677632856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957635 (or 957631 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 51.

The square root of 1677632856 is about 40958.9166848929. The cubic root of 1677632856 is about 1188.2257900487.

The spelling of 1677632856 in words is "one billion, six hundred seventy-seven million, six hundred thirty-two thousand, eight hundred fifty-six".