684013252 has 48 divisors (see below), whose sum is σ = 1317471232. Its totient is φ = 308810880.

The previous prime is 684013249. The next prime is 684013271. The reversal of 684013252 is 252310486.

It is a super-3 number, since 3×684013252³ (a number of 27 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 706873 + ... + 707839.

Almost surely, 2^684013252 is an apocalyptic number.

It is an amenable number.

684013252 is a deficient number, since it is larger than the sum of its proper divisors (633457980).

684013252 is a wasteful number, since it uses less digits than its factorization.

684013252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 684013252 is about 26153.6470114590. The cubic root of 684013252 is about 881.0925015919.

The spelling of 684013252 in words is "six hundred eighty-four million, thirteen thousand, two hundred fifty-two".