694396840 has 32 divisors (see below), whose sum is σ = 1563355080. Its totient is φ = 277587712.

The previous prime is 694396811. The next prime is 694396873. The reversal of 694396840 is 48693496.

694396840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 168428484 + 525968356 = 12978^2 + 22934^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75534 + ... + 84226.

Almost surely, 2^694396840 is an apocalyptic number.

It is an amenable number.

694396840 is an abundant number, since it is smaller than the sum of its proper divisors (868958240).

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

694396840 is a wasteful number, since it uses less digits than its factorization.

694396840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10701 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 694396840 is about 26351.4105884296. The cubic root of 694396840 is about 885.5285722815.

The spelling of 694396840 in words is "six hundred ninety-four million, three hundred ninety-six thousand, eight hundred forty".