265006664 has 16 divisors (see below), whose sum is σ = 535109820. Its totient is φ = 122310720.

The previous prime is 265006649. The next prime is 265006723. The reversal of 265006664 is 466600562.

It can be written as a sum of positive squares in 2 ways, for example, as 264712900 + 293764 = 16270^2 + 542^2 .

It is a Smith number, since the sum of its digits (35) 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 3 ways as a sum of consecutive naturals, for example, 1273967 + ... + 1274174.

Almost surely, 2^265006664 is an apocalyptic number.

It is an amenable number.

265006664 is an abundant number, since it is smaller than the sum of its proper divisors (270103156).

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

265006664 is a wasteful number, since it uses less digits than its factorization.

265006664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548160 (or 2548156 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 265006664 is about 16279.0252779459. The cubic root of 265006664 is about 642.3212129528.

The spelling of 265006664 in words is "two hundred sixty-five million, six thousand, six hundred sixty-four".