2566797401 has 12 divisors (see below), whose sum is σ = 3066575232. Its totient is φ = 2104451976.

The previous prime is 2566797397. The next prime is 2566797421. The reversal of 2566797401 is 1047976652.

It is not a de Polignac number, because 2566797401 - 2² = 2566797397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2566797421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342881 + ... + 350286.

It is an arithmetic number, because the mean of its divisors is an integer number (255547936).

Almost surely, 2^2566797401 is an apocalyptic number.

It is an amenable number.

2566797401 is a deficient number, since it is larger than the sum of its proper divisors (499777831).

2566797401 is an equidigital number, since it uses as much as digits as its factorization.

2566797401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693220 (or 693197 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 2566797401 is about 50663.5707486158. The cubic root of 2566797401 is about 1369.1904573150.

The spelling of 2566797401 in words is "two billion, five hundred sixty-six million, seven hundred ninety-seven thousand, four hundred one".