616668359 has 4 divisors (see below), whose sum is σ = 618944160. Its totient is φ = 614392560.

The previous prime is 616668347. The next prime is 616668397. The reversal of 616668359 is 953866616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 616668359 - 2⁴ = 616668343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616668329) 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, 1137494 + ... + 1138035.

It is an arithmetic number, because the mean of its divisors is an integer number (154736040).

Almost surely, 2^616668359 is an apocalyptic number.

616668359 is a deficient number, since it is larger than the sum of its proper divisors (2275801).

616668359 is a wasteful number, since it uses less digits than its factorization.

616668359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275800.

The product of its digits is 1399680, while the sum is 50.

The square root of 616668359 is about 24832.8081174884. The cubic root of 616668359 is about 851.1717905438.

The spelling of 616668359 in words is "six hundred sixteen million, six hundred sixty-eight thousand, three hundred fifty-nine".