2645556 has 24 divisors (see below), whose sum is σ = 6230784. Its totient is φ = 873600.

The previous prime is 2645551. The next prime is 2645561. The reversal of 2645556 is 6555462.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2645551) and next prime (2645561).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645551) 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, 381 + ... + 2331.

It is an arithmetic number, because the mean of its divisors is an integer number (259616).

2^2645556 is an apocalyptic number.

It is an amenable number.

2645556 is an abundant number, since it is smaller than the sum of its proper divisors (3585228).

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

2645556 is a wasteful number, since it uses less digits than its factorization.

2645556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071 (or 2069 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 2645556 is about 1626.5165231254. The cubic root of 2645556 is about 138.3053519960.

The spelling of 2645556 in words is "two million, six hundred forty-five thousand, five hundred fifty-six".