2564440366 has 16 divisors (see below), whose sum is σ = 4005087408. Its totient is φ = 1230436800.

The previous prime is 2564440357. The next prime is 2564440381. The reversal of 2564440366 is 6630444652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251340 + ... + 261343.

It is an arithmetic number, because the mean of its divisors is an integer number (250317963).

Almost surely, 2^2564440366 is an apocalyptic number.

2564440366 is a deficient number, since it is larger than the sum of its proper divisors (1440647042).

2564440366 is a wasteful number, since it uses less digits than its factorization.

2564440366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512787.

The product of its (nonzero) digits is 414720, while the sum is 40.

The square root of 2564440366 is about 50640.3037708109. The cubic root of 2564440366 is about 1368.7712295561.

The spelling of 2564440366 in words is "two billion, five hundred sixty-four million, four hundred forty thousand, three hundred sixty-six".