660022088 has 24 divisors (see below), whose sum is σ = 1360274790. Its totient is φ = 300009600.

The previous prime is 660022079. The next prime is 660022151. The reversal of 660022088 is 880220066.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 534626884 + 125395204 = 23122^2 + 11198^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339953 + ... + 341888.

Almost surely, 2^660022088 is an apocalyptic number.

It is an amenable number.

660022088 is an abundant number, since it is smaller than the sum of its proper divisors (700252702).

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

660022088 is a wasteful number, since it uses less digits than its factorization.

660022088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681869 (or 681854 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 660022088 is about 25690.8950408506. The cubic root of 660022088 is about 870.6684816913.

The spelling of 660022088 in words is "six hundred sixty million, twenty-two thousand, eighty-eight".