2564663262 has 32 divisors (see below), whose sum is σ = 5863663104. Its totient is φ = 732564000.

The previous prime is 2564663203. The next prime is 2564663267. The reversal of 2564663262 is 2623664652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564663267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234087 + ... + 244797.

It is an arithmetic number, because the mean of its divisors is an integer number (183239472).

Almost surely, 2^2564663262 is an apocalyptic number.

2564663262 is an abundant number, since it is smaller than the sum of its proper divisors (3298999842).

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

2564663262 is a wasteful number, since it uses less digits than its factorization.

2564663262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16424.

The product of its digits is 622080, while the sum is 42.

The square root of 2564663262 is about 50642.5044996789. The cubic root of 2564663262 is about 1368.8108853548.

The spelling of 2564663262 in words is "two billion, five hundred sixty-four million, six hundred sixty-three thousand, two hundred sixty-two".