684424924 has 12 divisors (see below), whose sum is σ = 1202405904. Its totient is φ = 340880384.

The previous prime is 684424903. The next prime is 684424933. The reversal of 684424924 is 429424486.

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, 331864 + ... + 333919.

It is an arithmetic number, because the mean of its divisors is an integer number (100200492).

Almost surely, 2^684424924 is an apocalyptic number.

It is an amenable number.

684424924 is a deficient number, since it is larger than the sum of its proper divisors (517980980).

684424924 is a wasteful number, since it uses less digits than its factorization.

684424924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666044 (or 666042 counting only the distinct ones).

The product of its digits is 442368, while the sum is 43.

The square root of 684424924 is about 26161.5160875665. The cubic root of 684424924 is about 881.2692273926.

The spelling of 684424924 in words is "six hundred eighty-four million, four hundred twenty-four thousand, nine hundred twenty-four".