2566801 has 8 divisors (see below), whose sum is σ = 2658024. Its totient is φ = 2476800.

The previous prime is 2566787. The next prime is 2566807. The reversal of 2566801 is 1086652.

It can be written as a sum of positive squares in 4 ways, for example, as 2235025 + 331776 = 1495^2 + 576^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2566801 - 2⁷ = 2566673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2566801.

It is not an unprimeable number, because it can be changed into a prime (2566807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6201 + ... + 6601.

It is an arithmetic number, because the mean of its divisors is an integer number (332253).

2^2566801 is an apocalyptic number.

It is an amenable number.

2566801 is a deficient number, since it is larger than the sum of its proper divisors (91223).

2566801 is a wasteful number, since it uses less digits than its factorization.

2566801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2566801 is about 1602.1239028240. The cubic root of 2566801 is about 136.9191097245.

The spelling of 2566801 in words is "two million, five hundred sixty-six thousand, eight hundred one".