677997440836 has 9 divisors (see below), whose sum is σ = 1186498403391. Its totient is φ = 338997897012.

The previous prime is 677997440821. The next prime is 677997440837. The reversal of 677997440836 is 638044799776.

The square root of 677997440836 is 823406.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677997440837) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1440961 + ... + 1852663.

Almost surely, 2^677997440836 is an apocalyptic number.

677997440836 is the 823406-th square number.

It is an amenable number.

677997440836 is a deficient number, since it is larger than the sum of its proper divisors (508500962555).

677997440836 is an frugal number, since it uses more digits than its factorization.

677997440836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823410 (or 411705 counting only the distinct ones).

The product of its (nonzero) digits is 384072192, while the sum is 70.

The spelling of 677997440836 in words is "six hundred seventy-seven billion, nine hundred ninety-seven million, four hundred forty thousand, eight hundred thirty-six".