266270664 has 48 divisors (see below), whose sum is σ = 731702160. Its totient is φ = 80687200.

The previous prime is 266270657. The next prime is 266270671. The reversal of 266270664 is 466072662.

It is an interprime number because it is at equal distance from previous prime (266270657) and next prime (266270671).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42942 + ... + 48749.

It is an arithmetic number, because the mean of its divisors is an integer number (15243795).

Almost surely, 2^266270664 is an apocalyptic number.

266270664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

266270664 is an abundant number, since it is smaller than the sum of its proper divisors (465431496).

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

266270664 is a wasteful number, since it uses less digits than its factorization.

266270664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91722 (or 91707 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 266270664 is about 16317.8020578753. The cubic root of 266270664 is about 643.3408182496.

The spelling of 266270664 in words is "two hundred sixty-six million, two hundred seventy thousand, six hundred sixty-four".