531668744 has 16 divisors (see below), whose sum is σ = 1055519100. Its totient is φ = 250196992.

The previous prime is 531668743. The next prime is 531668749. The reversal of 531668744 is 447866135.

It can be written as a sum of positive squares in 2 ways, for example, as 523036900 + 8631844 = 22870^2 + 2938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 531668695 and 531668704.

It is not an unprimeable number, because it can be changed into a prime (531668743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954529 + ... + 1954800.

Almost surely, 2^531668744 is an apocalyptic number.

It is an amenable number.

531668744 is a deficient number, since it is larger than the sum of its proper divisors (523850356).

531668744 is a wasteful number, since it uses less digits than its factorization.

531668744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3909352 (or 3909348 counting only the distinct ones).

The product of its digits is 483840, while the sum is 44.

The square root of 531668744 is about 23057.9431866765. The cubic root of 531668744 is about 810.1156894148.

The spelling of 531668744 in words is "five hundred thirty-one million, six hundred sixty-eight thousand, seven hundred forty-four".