684245452 has 12 divisors (see below), whose sum is σ = 1306286856. Its totient is φ = 311020640.

The previous prime is 684245447. The next prime is 684245489. The reversal of 684245452 is 254542486.

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, 7775473 + ... + 7775560.

It is an arithmetic number, because the mean of its divisors is an integer number (108857238).

Almost surely, 2^684245452 is an apocalyptic number.

It is an amenable number.

684245452 is a deficient number, since it is larger than the sum of its proper divisors (622041404).

684245452 is a wasteful number, since it uses less digits than its factorization.

684245452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551048 (or 15551046 counting only the distinct ones).

The product of its digits is 307200, while the sum is 40.

The square root of 684245452 is about 26158.0857862344. The cubic root of 684245452 is about 881.1921909533.

The spelling of 684245452 in words is "six hundred eighty-four million, two hundred forty-five thousand, four hundred fifty-two".