677703664 has 20 divisors (see below), whose sum is σ = 1432419480. Its totient is φ = 308047040.

The previous prime is 677703659. The next prime is 677703707. The reversal of 677703664 is 466307776.

It is a happy number.

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, 1925119 + ... + 1925470.

It is an arithmetic number, because the mean of its divisors is an integer number (71620974).

Almost surely, 2^677703664 is an apocalyptic number.

It is an amenable number.

677703664 is an abundant number, since it is smaller than the sum of its proper divisors (754715816).

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

677703664 is a wasteful number, since it uses less digits than its factorization.

677703664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850608 (or 3850602 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 46.

The square root of 677703664 is about 26032.7421529120. The cubic root of 677703664 is about 878.3749555181.

The spelling of 677703664 in words is "six hundred seventy-seven million, seven hundred three thousand, six hundred sixty-four".