2564785 has 8 divisors (see below), whose sum is σ = 3177216. Its totient is φ = 1985520.

The previous prime is 2564759. The next prime is 2564813. The reversal of 2564785 is 5874652.

It is a happy number.

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

It is not a de Polignac number, because 2564785 - 2⁷ = 2564657 is a prime.

It is a Duffinian 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, 8119 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (397152).

2^2564785 is an apocalyptic number.

It is an amenable number.

2564785 is a deficient number, since it is larger than the sum of its proper divisors (612431).

2564785 is a wasteful number, since it uses less digits than its factorization.

2564785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16583.

The product of its digits is 67200, while the sum is 37.

The square root of 2564785 is about 1601.4946144149. The cubic root of 2564785 is about 136.8832542995.

It can be divided in two parts, 256 and 4785, that added together give a square (5041 = 71²).

The spelling of 2564785 in words is "two million, five hundred sixty-four thousand, seven hundred eighty-five".