2564830 has 8 divisors (see below), whose sum is σ = 4616712. Its totient is φ = 1025928.

The previous prime is 2564819. The next prime is 2564831. The reversal of 2564830 is 384652.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128232 + ... + 128251.

It is an arithmetic number, because the mean of its divisors is an integer number (577089).

2^2564830 is an apocalyptic number.

2564830 is a deficient number, since it is larger than the sum of its proper divisors (2051882).

2564830 is a wasteful number, since it uses less digits than its factorization.

2564830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256490.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2564830 is about 1601.5086637293. The cubic root of 2564830 is about 136.8840548488.

The spelling of 2564830 in words is "two million, five hundred sixty-four thousand, eight hundred thirty".