693904 has 20 divisors (see below), whose sum is σ = 1388800. Its totient is φ = 335520.

The previous prime is 693881. The next prime is 693943. The reversal of 693904 is 409396.

693904 is an admirable number.

It is a super-2 number, since 2×693904² = 963005522432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 204 + ... + 1195.

It is an arithmetic number, because the mean of its divisors is an integer number (69440).

2⁶⁹³⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

693904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

693904 is a wasteful number, since it uses less digits than its factorization.

693904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 693904 is about 833.0090035528. The cubic root of 693904 is about 88.5319024865.

The spelling of 693904 in words is "six hundred ninety-three thousand, nine hundred four".