2649564 has 24 divisors (see below), whose sum is σ = 6869520. Its totient is φ = 883152.

The previous prime is 2649557. The next prime is 2649587. The reversal of 2649564 is 4659462.

2649564 is a `hidden beast` number, since 2 + 649 + 5 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 12159 + ... + 12374.

It is an arithmetic number, because the mean of its divisors is an integer number (286230).

2^2649564 is an apocalyptic number.

It is an amenable number.

2649564 is an abundant number, since it is smaller than the sum of its proper divisors (4219956).

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

2649564 is a wasteful number, since it uses less digits than its factorization.

2649564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24546 (or 24538 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2649564 is about 1627.7481377658. The cubic root of 2649564 is about 138.3751606552.

The spelling of 2649564 in words is "two million, six hundred forty-nine thousand, five hundred sixty-four".