120644646 has 8 divisors (see below), whose sum is σ = 241289304. Its totient is φ = 40214880.

The previous prime is 120644599. The next prime is 120644647. The reversal of 120644646 is 646446021.

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

120644646 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120644647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10053715 + ... + 10053726.

It is an arithmetic number, because the mean of its divisors is an integer number (30161163).

Almost surely, 2^120644646 is an apocalyptic number.

120644646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120644646 is a wasteful number, since it uses less digits than its factorization.

120644646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20107446.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 120644646 is about 10983.8356688363. The cubic root of 120644646 is about 494.1240789362.

The spelling of 120644646 in words is "one hundred twenty million, six hundred forty-four thousand, six hundred forty-six".