616972499 has 16 divisors (see below), whose sum is σ = 737130240. Its totient is φ = 508956960.

The previous prime is 616972481. The next prime is 616972511. The reversal of 616972499 is 994279616.

It is a cyclic number.

It is not a de Polignac number, because 616972499 - 2¹⁶ = 616906963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616972499.

It is not an unprimeable number, because it can be changed into a prime (616972399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28127 + ... + 45000.

It is an arithmetic number, because the mean of its divisors is an integer number (46070640).

Almost surely, 2^616972499 is an apocalyptic number.

616972499 is a deficient number, since it is larger than the sum of its proper divisors (120157741).

616972499 is a wasteful number, since it uses less digits than its factorization.

616972499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73210.

The product of its digits is 1469664, while the sum is 53.

The square root of 616972499 is about 24838.9311162940. The cubic root of 616972499 is about 851.3116998036.

The spelling of 616972499 in words is "six hundred sixteen million, nine hundred seventy-two thousand, four hundred ninety-nine".