531415668 has 24 divisors (see below), whose sum is σ = 1417108672. Its totient is φ = 151833024.

The previous prime is 531415649. The next prime is 531415681. The reversal of 531415668 is 866514135.

It is a super-2 number, since 2×531415668² = 564805224391772448, which contains 22 as substring.

It is a congruent number.

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, 3163105 + ... + 3163272.

Almost surely, 2^531415668 is an apocalyptic number.

It is an amenable number.

531415668 is an abundant number, since it is smaller than the sum of its proper divisors (885693004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531415668 is a wasteful number, since it uses less digits than its factorization.

531415668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326391 (or 6326389 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 531415668 is about 23052.4547066034. The cubic root of 531415668 is about 809.9871298062.

The spelling of 531415668 in words is "five hundred thirty-one million, four hundred fifteen thousand, six hundred sixty-eight".