677977444 has 27 divisors (see below), whose sum is σ = 1216633593. Its totient is φ = 330578448.

The previous prime is 677977439. The next prime is 677977451. The reversal of 677977444 is 444779776.

The square root of 677977444 is 26038.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 116856100 + 561121344 = 10810^2 + 23688^2 .

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 2447434 + ... + 2447710.

Almost surely, 2^677977444 is an apocalyptic number.

677977444 is the 26038-th square number.

It is an amenable number.

677977444 is a deficient number, since it is larger than the sum of its proper divisors (538656149).

677977444 is an equidigital number, since it uses as much as digits as its factorization.

677977444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652 (or 326 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 55.

The cubic root of 677977444 is about 878.4932221155.

It can be divided in two parts, 677 and 977444, that added together give a square (978121 = 989²).

The spelling of 677977444 in words is "six hundred seventy-seven million, nine hundred seventy-seven thousand, four hundred forty-four".