684138114 has 36 divisors (see below), whose sum is σ = 1629309318. Its totient is φ = 207313920.

The previous prime is 684138109. The next prime is 684138181. The reversal of 684138114 is 411831486.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 458687889 + 225450225 = 21417^2 + 15015^2 .

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 17 ways as a sum of consecutive naturals, for example, 154879 + ... + 159234.

Almost surely, 2^684138114 is an apocalyptic number.

684138114 is an abundant number, since it is smaller than the sum of its proper divisors (945171204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684138114 is a wasteful number, since it uses less digits than its factorization.

684138114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314143 (or 314129 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 684138114 is about 26156.0339883553. The cubic root of 684138114 is about 881.1461108254.

The spelling of 684138114 in words is "six hundred eighty-four million, one hundred thirty-eight thousand, one hundred fourteen".