264661660 has 12 divisors (see below), whose sum is σ = 555789528. Its totient is φ = 105864656.

The previous prime is 264661643. The next prime is 264661717. The reversal of 264661660 is 66166462.

It is a congruent number.

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, 6616522 + ... + 6616561.

It is an arithmetic number, because the mean of its divisors is an integer number (46315794).

Almost surely, 2^264661660 is an apocalyptic number.

264661660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264661660 is an abundant number, since it is smaller than the sum of its proper divisors (291127868).

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

264661660 is a wasteful number, since it uses less digits than its factorization.

264661660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13233092 (or 13233090 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 264661660 is about 16268.4252464705. The cubic root of 264661660 is about 642.0423525144.

The spelling of 264661660 in words is "two hundred sixty-four million, six hundred sixty-one thousand, six hundred sixty".