677909568 has 112 divisors (see below), whose sum is σ = 2120676480. Its totient is φ = 186998784.

The previous prime is 677909549. The next prime is 677909627. The reversal of 677909568 is 865909776.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×677909568² = 919122764771893248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30280 + ... + 47672.

Almost surely, 2^677909568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677909568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060338240).

677909568 is an abundant number, since it is smaller than the sum of its proper divisors (1442766912).

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

677909568 is a wasteful number, since it uses less digits than its factorization.

677909568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17444 (or 17434 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 57.

The square root of 677909568 is about 26036.6965646566. The cubic root of 677909568 is about 878.4639042297.

The spelling of 677909568 in words is "six hundred seventy-seven million, nine hundred nine thousand, five hundred sixty-eight".