694490459 has 6 divisors (see below), whose sum is σ = 752022396. Its totient is φ = 641067960.

The previous prime is 694490449. The next prime is 694490473. The reversal of 694490459 is 954094496.

694490459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 694490459 - 2²⁴ = 677713243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694490449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2054537 + ... + 2054874.

It is an arithmetic number, because the mean of its divisors is an integer number (125337066).

Almost surely, 2^694490459 is an apocalyptic number.

694490459 is a deficient number, since it is larger than the sum of its proper divisors (57531937).

694490459 is a wasteful number, since it uses less digits than its factorization.

694490459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109437 (or 4109424 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 50.

The square root of 694490459 is about 26353.1868850809. The cubic root of 694490459 is about 885.5683663249.

The spelling of 694490459 in words is "six hundred ninety-four million, four hundred ninety thousand, four hundred fifty-nine".