120775617 has 14 divisors (see below), whose sum is σ = 181081682. Its totient is φ = 80516592.

The previous prime is 120775561. The next prime is 120775619. The reversal of 120775617 is 716577021.

120775617 is a `hidden beast` number, since 1 + 20 + 77 + 561 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109746576 + 11029041 = 10476^2 + 3321^2 .

It is not a de Polignac number, because 120775617 - 2⁷ = 120775489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120775619) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 82108 + ... + 83565.

Almost surely, 2^120775617 is an apocalyptic number.

It is an amenable number.

120775617 is a deficient number, since it is larger than the sum of its proper divisors (60306065).

120775617 is an frugal number, since it uses more digits than its factorization.

120775617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165691 (or 165676 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 120775617 is about 10989.7960399636. The cubic root of 120775617 is about 494.3028201751.

The spelling of 120775617 in words is "one hundred twenty million, seven hundred seventy-five thousand, six hundred seventeen".