684016052 has 12 divisors (see below), whose sum is σ = 1199181060. Its totient is φ = 341392896.

The previous prime is 684016033. The next prime is 684016117. The reversal of 684016052 is 250610486.

It can be written as a sum of positive squares in 2 ways, for example, as 163993636 + 520022416 = 12806^2 + 22804^2 .

It is a congruent number.

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, 151277 + ... + 155732.

It is an arithmetic number, because the mean of its divisors is an integer number (99931755).

Almost surely, 2^684016052 is an apocalyptic number.

It is an amenable number.

684016052 is a deficient number, since it is larger than the sum of its proper divisors (515165008).

684016052 is a wasteful number, since it uses less digits than its factorization.

684016052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307570 (or 307568 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 684016052 is about 26153.7005412236. The cubic root of 684016052 is about 881.0937038375.

The spelling of 684016052 in words is "six hundred eighty-four million, sixteen thousand, fifty-two".