377999664 has 160 divisors (see below), whose sum is σ = 1193923584. Its totient is φ = 100700160.

The previous prime is 377999653. The next prime is 377999681. The reversal of 377999664 is 466999773.

It is a super-2 number, since 2×377999664² = 285767491968225792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 377999598 and 377999607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316252 + ... + 317444.

Almost surely, 2^377999664 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 377999664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596961792).

377999664 is an abundant number, since it is smaller than the sum of its proper divisors (815923920).

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

377999664 is a wasteful number, since it uses less digits than its factorization.

377999664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275 (or 1269 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 60.

The square root of 377999664 is about 19442.2134542341. The cubic root of 377999664 is about 723.0424650176.

The spelling of 377999664 in words is "three hundred seventy-seven million, nine hundred ninety-nine thousand, six hundred sixty-four".