660102220 has 24 divisors (see below), whose sum is σ = 1430932608. Its totient is φ = 255523200.

The previous prime is 660102137. The next prime is 660102229. The reversal of 660102220 is 22201066.

It is not an unprimeable number, because it can be changed into a prime (660102229) 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, 531721 + ... + 532960.

It is an arithmetic number, because the mean of its divisors is an integer number (59622192).

Almost surely, 2^660102220 is an apocalyptic number.

It is an amenable number.

660102220 is an abundant number, since it is smaller than the sum of its proper divisors (770830388).

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

660102220 is a wasteful number, since it uses less digits than its factorization.

660102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064721 (or 1064719 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 660102220 is about 25692.4545343570. The cubic root of 660102220 is about 870.7037156553.

Adding to 660102220 its reverse (22201066), we get a palindrome (682303286).

The spelling of 660102220 in words is "six hundred sixty million, one hundred two thousand, two hundred twenty".