2620564 has 12 divisors (see below), whose sum is σ = 4614624. Its totient is φ = 1302104.

The previous prime is 2620531. The next prime is 2620573. The reversal of 2620564 is 4650262.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (384552).

2^2620564 is an apocalyptic number.

It is an amenable number.

2620564 is a deficient number, since it is larger than the sum of its proper divisors (1994060).

2620564 is a wasteful number, since it uses less digits than its factorization.

2620564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094 (or 4092 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2620564 is about 1618.8156164307. The cubic root of 2620564 is about 137.8684596880.

The spelling of 2620564 in words is "two million, six hundred twenty thousand, five hundred sixty-four".