993215864 has 16 divisors (see below), whose sum is σ = 1912612200. Its totient is φ = 483185952.

The previous prime is 993215801. The next prime is 993215911. The reversal of 993215864 is 468512399.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1677434 + ... + 1678025.

Almost surely, 2^993215864 is an apocalyptic number.

It is an amenable number.

993215864 is a deficient number, since it is larger than the sum of its proper divisors (919396336).

993215864 is a wasteful number, since it uses less digits than its factorization.

993215864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355502 (or 3355498 counting only the distinct ones).

The product of its digits is 466560, while the sum is 47.

The square root of 993215864 is about 31515.3274455462. The cubic root of 993215864 is about 997.7334881384.

The spelling of 993215864 in words is "nine hundred ninety-three million, two hundred fifteen thousand, eight hundred sixty-four".