120556617 has 8 divisors (see below), whose sum is σ = 160903680. Its totient is φ = 80290320.

The previous prime is 120556589. The next prime is 120556621. The reversal of 120556617 is 716655021.

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

It is not a de Polignac number, because 120556617 - 2²³ = 112168009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120556627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16617 + ... + 22742.

It is an arithmetic number, because the mean of its divisors is an integer number (20112960).

Almost surely, 2^120556617 is an apocalyptic number.

It is an amenable number.

120556617 is a deficient number, since it is larger than the sum of its proper divisors (40347063).

120556617 is a wasteful number, since it uses less digits than its factorization.

120556617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40383.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 120556617 is about 10979.8277308890. The cubic root of 120556617 is about 494.0038696173.

The spelling of 120556617 in words is "one hundred twenty million, five hundred fifty-six thousand, six hundred seventeen".