531290684 has 6 divisors (see below), whose sum is σ = 929758704. Its totient is φ = 265645340.

The previous prime is 531290677. The next prime is 531290699. The reversal of 531290684 is 486092135.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66411332 + ... + 66411339.

It is an arithmetic number, because the mean of its divisors is an integer number (154959784).

Almost surely, 2^531290684 is an apocalyptic number.

It is an amenable number.

531290684 is a deficient number, since it is larger than the sum of its proper divisors (398468020).

531290684 is a wasteful number, since it uses less digits than its factorization.

531290684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132822675 (or 132822673 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 531290684 is about 23049.7436862105. The cubic root of 531290684 is about 809.9236243589.

The spelling of 531290684 in words is "five hundred thirty-one million, two hundred ninety thousand, six hundred eighty-four".