693640704 has 80 divisors (see below), whose sum is σ = 1853774208. Its totient is φ = 230479872.

The previous prime is 693640691. The next prime is 693640709. The reversal of 693640704 is 407046396.

It is a super-2 number, since 2×693640704² = 962274852491231232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693640709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716829 + ... + 717795.

Almost surely, 2^693640704 is an apocalyptic number.

693640704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 693640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (926887104).

693640704 is an abundant number, since it is smaller than the sum of its proper divisors (1160133504).

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

693640704 is an equidigital number, since it uses as much as digits as its factorization.

693640704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 693640704 is about 26337.0595169620. The cubic root of 693640704 is about 885.2070350957.

The spelling of 693640704 in words is "six hundred ninety-three million, six hundred forty thousand, seven hundred four".