616525616 has 40 divisors (see below), whose sum is σ = 1412245920. Its totient is φ = 255112704.

The previous prime is 616525573. The next prime is 616525631.

616525616 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 616525616.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91661 + ... + 98156.

It is an arithmetic number, because the mean of its divisors is an integer number (35306148).

Almost surely, 2^616525616 is an apocalyptic number.

It is an amenable number.

616525616 is an abundant number, since it is smaller than the sum of its proper divisors (795720304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

616525616 is a wasteful number, since it uses less digits than its factorization.

616525616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189861 (or 189855 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 616525616 is about 24829.9338702301. The cubic root of 616525616 is about 851.1061106209.

The spelling of 616525616 in words is "six hundred sixteen million, five hundred twenty-five thousand, six hundred sixteen".