660121044 has 24 divisors (see below), whose sum is σ = 1680308448. Its totient is φ = 200036640.

The previous prime is 660121043. The next prime is 660121073. The reversal of 660121044 is 440121066.

660121044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660121043) 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, 2500327 + ... + 2500590.

It is an arithmetic number, because the mean of its divisors is an integer number (70012852).

Almost surely, 2^660121044 is an apocalyptic number.

It is an amenable number.

660121044 is an abundant number, since it is smaller than the sum of its proper divisors (1020187404).

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

660121044 is a wasteful number, since it uses less digits than its factorization.

660121044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000935 (or 5000933 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 660121044 is about 25692.8208649809. The cubic root of 660121044 is about 870.7119921365.

The spelling of 660121044 in words is "six hundred sixty million, one hundred twenty-one thousand, forty-four".