660260164 has 12 divisors (see below), whose sum is σ = 1156772988. Its totient is φ = 329753600.

The previous prime is 660260137. The next prime is 660260171. The reversal of 660260164 is 461062066.

It can be written as a sum of positive squares in 2 ways, for example, as 410872900 + 249387264 = 20270^2 + 15792^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90157 + ... + 97204.

It is an arithmetic number, because the mean of its divisors is an integer number (96397749).

Almost surely, 2^660260164 is an apocalyptic number.

It is an amenable number.

660260164 is a deficient number, since it is larger than the sum of its proper divisors (496512824).

660260164 is a wasteful number, since it uses less digits than its factorization.

660260164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188246 (or 188244 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 660260164 is about 25695.5280934251. The cubic root of 660260164 is about 870.7731551333.

It can be divided in two parts, 6602 and 60164, that added together give a palindrome (66766).

The spelling of 660260164 in words is "six hundred sixty million, two hundred sixty thousand, one hundred sixty-four".