616625121 has 16 divisors (see below), whose sum is σ = 941875200. Its totient is φ = 351511248.

The previous prime is 616625077. The next prime is 616625129. The reversal of 616625121 is 121526616.

It is not a de Polignac number, because 616625121 - 2⁹ = 616624609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (616625129) 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, 26241 + ... + 43838.

It is an arithmetic number, because the mean of its divisors is an integer number (58867200).

Almost surely, 2^616625121 is an apocalyptic number.

It is an amenable number.

616625121 is a deficient number, since it is larger than the sum of its proper divisors (325250079).

616625121 is a wasteful number, since it uses less digits than its factorization.

616625121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70508.

The product of its digits is 4320, while the sum is 30.

The square root of 616625121 is about 24831.9375200567. The cubic root of 616625121 is about 851.1518966384.

The spelling of 616625121 in words is "six hundred sixteen million, six hundred twenty-five thousand, one hundred twenty-one".