264621056 has 176 divisors, whose sum is σ = 668140800. Its totient is φ = 102187008.

The previous prime is 264620987. The next prime is 264621061. The reversal of 264621056 is 650126462.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3949535 + ... + 3949601.

Almost surely, 2^264621056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 264621056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334070400).

264621056 is an abundant number, since it is smaller than the sum of its proper divisors (403519744).

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

264621056 is a wasteful number, since it uses less digits than its factorization.

264621056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 264621056 is about 16267.1772597461. The cubic root of 264621056 is about 642.0095171061.

The spelling of 264621056 in words is "two hundred sixty-four million, six hundred twenty-one thousand, fifty-six".