2563785 has 32 divisors (see below), whose sum is σ = 5210880. Its totient is φ = 1171584.

The previous prime is 2563777. The next prime is 2563811. The reversal of 2563785 is 5873652.

It is not a de Polignac number, because 2563785 - 2³ = 2563777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (162840).

2^2563785 is an apocalyptic number.

It is an amenable number.

2563785 is an abundant number, since it is smaller than the sum of its proper divisors (2647095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2563785 is a wasteful number, since it uses less digits than its factorization.

2563785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734 (or 2728 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 2563785 is about 1601.1823756212. The cubic root of 2563785 is about 136.8654618987.

The spelling of 2563785 in words is "two million, five hundred sixty-three thousand, seven hundred eighty-five".