677666064 has 20 divisors (see below), whose sum is σ = 1750637456. Its totient is φ = 225888672.

The previous prime is 677666047. The next prime is 677666083. The reversal of 677666064 is 460666776.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 14118043 = 677666064 / (6 + 7 + 7 + 6 + 6 + 6 + 0 + 6 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7058974 + ... + 7059069.

Almost surely, 2^677666064 is an apocalyptic number.

It is an amenable number.

677666064 is an abundant number, since it is smaller than the sum of its proper divisors (1072971392).

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

677666064 is a wasteful number, since it uses less digits than its factorization.

677666064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14118054 (or 14118048 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 48.

The square root of 677666064 is about 26032.0199754072. The cubic root of 677666064 is about 878.3587107045.

The spelling of 677666064 in words is "six hundred seventy-seven million, six hundred sixty-six thousand, sixty-four".