616940815 has 8 divisors (see below), whose sum is σ = 740736720. Its totient is φ = 493280832.

The previous prime is 616940803. The next prime is 616940833. The reversal of 616940815 is 518049616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 616940815 - 2²⁵ = 583386383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23710 + ... + 42379.

It is an arithmetic number, because the mean of its divisors is an integer number (92592090).

Almost surely, 2^616940815 is an apocalyptic number.

616940815 is a deficient number, since it is larger than the sum of its proper divisors (123795905).

616940815 is a wasteful number, since it uses less digits than its factorization.

616940815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67961.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 616940815 is about 24838.2933189863. The cubic root of 616940815 is about 851.2971268031.

The spelling of 616940815 in words is "six hundred sixteen million, nine hundred forty thousand, eight hundred fifteen".