531604994 has 16 divisors (see below), whose sum is σ = 845903736. Its totient is φ = 249696000.

The previous prime is 531604987. The next prime is 531605021. The reversal of 531604994 is 499406135.

It can be written as a sum of positive squares in 4 ways, for example, as 527299369 + 4305625 = 22963^2 + 2075^2 .

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, 3944 + ... + 32844.

Almost surely, 2^531604994 is an apocalyptic number.

531604994 is a deficient number, since it is larger than the sum of its proper divisors (314298742).

531604994 is a wasteful number, since it uses less digits than its factorization.

531604994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29461.

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

The square root of 531604994 is about 23056.5607582744. The cubic root of 531604994 is about 810.0833090150.

The spelling of 531604994 in words is "five hundred thirty-one million, six hundred four thousand, nine hundred ninety-four".