2601564 has 24 divisors (see below), whose sum is σ = 6937728. Its totient is φ = 743280.

The previous prime is 2601563. The next prime is 2601569. The reversal of 2601564 is 4651062.

2601564 = T₄₁₇ + T₄₁₈ + ... + T₄₄₄.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15402 + ... + 15569.

It is an arithmetic number, because the mean of its divisors is an integer number (289072).

2^2601564 is an apocalyptic number.

It is an amenable number.

2601564 is an abundant number, since it is smaller than the sum of its proper divisors (4336164).

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

2601564 is a wasteful number, since it uses less digits than its factorization.

2601564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30985 (or 30983 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2601564 is about 1612.9364525610. The cubic root of 2601564 is about 137.5344530744.

The spelling of 2601564 in words is "two million, six hundred one thousand, five hundred sixty-four".