120864665 has 8 divisors (see below), whose sum is σ = 145405320. Its totient is φ = 96446592.

The previous prime is 120864647. The next prime is 120864673. The reversal of 120864665 is 566468021.

It can be written as a sum of positive squares in 4 ways, for example, as 1792921 + 119071744 = 1339^2 + 10912^2 .

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 120864665 - 2¹⁰ = 120863641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28460 + ... + 32429.

It is an arithmetic number, because the mean of its divisors is an integer number (18175665).

Almost surely, 2^120864665 is an apocalyptic number.

It is an amenable number.

120864665 is a deficient number, since it is larger than the sum of its proper divisors (24540655).

120864665 is an equidigital number, since it uses as much as digits as its factorization.

120864665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61291.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 120864665 is about 10993.8466880342. The cubic root of 120864665 is about 494.4242736749.

The spelling of 120864665 in words is "one hundred twenty million, eight hundred sixty-four thousand, six hundred sixty-five".