666052920 has 96 divisors (see below), whose sum is σ = 2331201600. Its totient is φ = 163950336.

The previous prime is 666052903. The next prime is 666052921. The reversal of 666052920 is 29250666.

666052920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666052921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66480 + ... + 75839.

It is an arithmetic number, because the mean of its divisors is an integer number (24283350).

Almost surely, 2^666052920 is an apocalyptic number.

666052920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

666052920 is an abundant number, since it is smaller than the sum of its proper divisors (1665148680).

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

666052920 is a wasteful number, since it uses less digits than its factorization.

666052920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142349 (or 142342 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 666052920 is about 25808.0010849349. The cubic root of 666052920 is about 873.3123038789.

The spelling of 666052920 in words is "six hundred sixty-six million, fifty-two thousand, nine hundred twenty".