666653022 has 96 divisors (see below), whose sum is σ = 1729728000. Its totient is φ = 181431360.

The previous prime is 666652997. The next prime is 666653033. The reversal of 666653022 is 220356666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1335729 + ... + 1336227.

It is an arithmetic number, because the mean of its divisors is an integer number (18018000).

Almost surely, 2^666653022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666653022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864864000).

666653022 is an abundant number, since it is smaller than the sum of its proper divisors (1063074978).

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

666653022 is a wasteful number, since it uses less digits than its factorization.

666653022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 666653022 is about 25819.6247455303. The cubic root of 666653022 is about 873.5745048385.

The spelling of 666653022 in words is "six hundred sixty-six million, six hundred fifty-three thousand, twenty-two".