531923864 has 8 divisors (see below), whose sum is σ = 997357260. Its totient is φ = 265961928.

The previous prime is 531923839. The next prime is 531923869. The reversal of 531923864 is 468329135.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531923869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33245234 + ... + 33245249.

Almost surely, 2^531923864 is an apocalyptic number.

It is an amenable number.

531923864 is a deficient number, since it is larger than the sum of its proper divisors (465433396).

531923864 is a wasteful number, since it uses less digits than its factorization.

531923864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66490489 (or 66490485 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 531923864 is about 23063.4746731710. The cubic root of 531923864 is about 810.2452460658.

The spelling of 531923864 in words is "five hundred thirty-one million, nine hundred twenty-three thousand, eight hundred sixty-four".