120654661 has 8 divisors (see below), whose sum is σ = 128520000. Its totient is φ = 112874688.

The previous prime is 120654643. The next prime is 120654691. The reversal of 120654661 is 166456021.

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

It is a cyclic number.

It is not a de Polignac number, because 120654661 - 2⁵ = 120654629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120654601) 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, 18411 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (16065000).

Almost surely, 2^120654661 is an apocalyptic number.

It is an amenable number.

120654661 is a deficient number, since it is larger than the sum of its proper divisors (7865339).

120654661 is a wasteful number, since it uses less digits than its factorization.

120654661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42683.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 120654661 is about 10984.2915565821. The cubic root of 120654661 is about 494.1377513643.

Subtracting from 120654661 its product of nonzero digits (8640), we obtain a palindrome (120646021).

The spelling of 120654661 in words is "one hundred twenty million, six hundred fifty-four thousand, six hundred sixty-one".