616602655 has 4 divisors (see below), whose sum is σ = 739923192. Its totient is φ = 493282120.

The previous prime is 616602647. The next prime is 616602659. The reversal of 616602655 is 556206616.

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

It is not a de Polignac number, because 616602655 - 2³ = 616602647 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 (616602659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61660261 + ... + 61660270.

It is an arithmetic number, because the mean of its divisors is an integer number (184980798).

Almost surely, 2^616602655 is an apocalyptic number.

616602655 is a deficient number, since it is larger than the sum of its proper divisors (123320537).

616602655 is a wasteful number, since it uses less digits than its factorization.

616602655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123320536.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 616602655 is about 24831.4851549399. The cubic root of 616602655 is about 851.1415596118.

The spelling of 616602655 in words is "six hundred sixteen million, six hundred two thousand, six hundred fifty-five".