612398331 has 6 divisors (see below), whose sum is σ = 884575380. Its totient is φ = 408265548.

The previous prime is 612398323. The next prime is 612398333. The reversal of 612398331 is 133893216.

612398331 is a `hidden beast` number, since 612 + 3 + 9 + 8 + 3 + 31 = 666.

It is not a de Polignac number, because 612398331 - 2³ = 612398323 is a prime.

It is a super-2 number, since 2×612398331² = 750063431623171122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (612398333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34022121 + ... + 34022138.

It is an arithmetic number, because the mean of its divisors is an integer number (147429230).

Almost surely, 2^612398331 is an apocalyptic number.

612398331 is a deficient number, since it is larger than the sum of its proper divisors (272177049).

612398331 is a wasteful number, since it uses less digits than its factorization.

612398331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68044265 (or 68044262 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 612398331 is about 24746.6832323041. The cubic root of 612398331 is about 849.2026344812.

The spelling of 612398331 in words is "six hundred twelve million, three hundred ninety-eight thousand, three hundred thirty-one".