679384765504 has 63 divisors (see below), whose sum is σ = 1357628142117. Its totient is φ = 337321845504.

The previous prime is 679384765489. The next prime is 679384765511. The reversal of 679384765504 is 405567483976.

The square root of 679384765504 is 824248.

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., 665660174400 + 13724591104 = 815880^2 + 117152^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1299014587 + ... + 1299015109.

Almost surely, 2^679384765504 is an apocalyptic number.

679384765504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

679384765504 is the 824248-th square number.

It is an amenable number.

679384765504 is a deficient number, since it is larger than the sum of its proper divisors (678243376613).

679384765504 is an frugal number, since it uses more digits than its factorization.

679384765504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 152409600, while the sum is 64.

Multiplying 679384765504 by its sum of digits (64), we get a square (43480624992256 = 6593984²).

679384765504 divided by its sum of digits (64) gives a square (10615386961 = 103031²).

The spelling of 679384765504 in words is "six hundred seventy-nine billion, three hundred eighty-four million, seven hundred sixty-five thousand, five hundred four".