684132368 has 20 divisors (see below), whose sum is σ = 1361332140. Its totient is φ = 332820864.

The previous prime is 684132347. The next prime is 684132419. The reversal of 684132368 is 863231486.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 665227264 + 18905104 = 25792^2 + 4348^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577223 + ... + 578406.

It is an arithmetic number, because the mean of its divisors is an integer number (68066607).

Almost surely, 2^684132368 is an apocalyptic number.

It is an amenable number.

684132368 is a deficient number, since it is larger than the sum of its proper divisors (677199772).

684132368 is a wasteful number, since it uses less digits than its factorization.

684132368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155674 (or 1155668 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 684132368 is about 26155.9241473132. The cubic root of 684132368 is about 881.1436439358.

It can be divided in two parts, 68413 and 2368, that multiplied together give a square (162001984 = 12728²).

The spelling of 684132368 in words is "six hundred eighty-four million, one hundred thirty-two thousand, three hundred sixty-eight".