120456661 has 8 divisors (see below), whose sum is σ = 130095000. Its totient is φ = 110871552.

The previous prime is 120456649. The next prime is 120456667. The reversal of 120456661 is 166654021.

It can be written as a sum of positive squares in 4 ways, for example, as 10080625 + 110376036 = 3175^2 + 10506^2 .

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 120456661 - 2⁷ = 120456533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120456667) 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, 8536 + ... + 17713.

It is an arithmetic number, because the mean of its divisors is an integer number (16261875).

Almost surely, 2^120456661 is an apocalyptic number.

It is an amenable number.

120456661 is a deficient number, since it is larger than the sum of its proper divisors (9638339).

120456661 is a wasteful number, since it uses less digits than its factorization.

120456661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26615.

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

The square root of 120456661 is about 10975.2749851655. The cubic root of 120456661 is about 493.8673022372.

The spelling of 120456661 in words is "one hundred twenty million, four hundred fifty-six thousand, six hundred sixty-one".