2566904390 has 32 divisors (see below), whose sum is σ = 4680529920. Its totient is φ = 1013490400.

The previous prime is 2566904359. The next prime is 2566904407. The reversal of 2566904390 is 934096652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245081 + ... + 255339.

It is an arithmetic number, because the mean of its divisors is an integer number (146266560).

Almost surely, 2^2566904390 is an apocalyptic number.

2566904390 is a deficient number, since it is larger than the sum of its proper divisors (2113625530).

2566904390 is a wasteful number, since it uses less digits than its factorization.

2566904390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10588.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 2566904390 is about 50664.6266146312. The cubic root of 2566904390 is about 1369.2094805386.

The spelling of 2566904390 in words is "two billion, five hundred sixty-six million, nine hundred four thousand, three hundred ninety".