694139504 has 20 divisors (see below), whose sum is σ = 1361921760. Its totient is φ = 342675840.

The previous prime is 694139503. The next prime is 694139513. The reversal of 694139504 is 405931496.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694139503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273317 + ... + 275844.

It is an arithmetic number, because the mean of its divisors is an integer number (68096088).

Almost surely, 2^694139504 is an apocalyptic number.

It is an amenable number.

694139504 is a deficient number, since it is larger than the sum of its proper divisors (667782256).

694139504 is a wasteful number, since it uses less digits than its factorization.

694139504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549248 (or 549242 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 694139504 is about 26346.5273613051. The cubic root of 694139504 is about 885.4191696445.

The spelling of 694139504 in words is "six hundred ninety-four million, one hundred thirty-nine thousand, five hundred four".