677944064 has 36 divisors (see below), whose sum is σ = 1546563984. Its totient is φ = 290546688.

The previous prime is 677944039. The next prime is 677944093. The reversal of 677944064 is 460449776.

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, 187367 + ... + 190950.

Almost surely, 2^677944064 is an apocalyptic number.

677944064 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

677944064 is an abundant number, since it is smaller than the sum of its proper divisors (868619920).

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

677944064 is an equidigital number, since it uses as much as digits as its factorization.

677944064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378340 (or 378326 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 677944064 is about 26037.3590058593. The cubic root of 677944064 is about 878.4788044358.

The spelling of 677944064 in words is "six hundred seventy-seven million, nine hundred forty-four thousand, sixty-four".