677799944 has 8 divisors (see below), whose sum is σ = 1270874910. Its totient is φ = 338899968.

The previous prime is 677799943. The next prime is 677799971. The reversal of 677799944 is 449997776.

It can be written as a sum of positive squares in only one way, i.e., 611572900 + 66227044 = 24730^2 + 8138^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (677799943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42362489 + ... + 42362504.

Almost surely, 2^677799944 is an apocalyptic number.

It is an amenable number.

677799944 is a deficient number, since it is larger than the sum of its proper divisors (593074966).

677799944 is a wasteful number, since it uses less digits than its factorization.

677799944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84724999 (or 84724995 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 62.

The square root of 677799944 is about 26034.5912969649. The cubic root of 677799944 is about 878.4165498711.

The spelling of 677799944 in words is "six hundred seventy-seven million, seven hundred ninety-nine thousand, nine hundred forty-four".