694139456 has 14 divisors (see below), whose sum is σ = 1377433110. Its totient is φ = 347069696.

The previous prime is 694139449. The next prime is 694139489. The reversal of 694139456 is 654931496.

It is a happy number.

694139456 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 only one way, i.e., 545689600 + 148449856 = 23360^2 + 12184^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 694139456.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5422901 + ... + 5423028.

Almost surely, 2^694139456 is an apocalyptic number.

It is an amenable number.

694139456 is a deficient number, since it is larger than the sum of its proper divisors (683293654).

694139456 is a wasteful number, since it uses less digits than its factorization.

694139456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10845941 (or 10845931 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The square root of 694139456 is about 26346.5264503691. The cubic root of 694139456 is about 885.4191492355.

The spelling of 694139456 in words is "six hundred ninety-four million, one hundred thirty-nine thousand, four hundred fifty-six".