2645560 has 48 divisors (see below), whose sum is σ = 6373800. Its totient is φ = 985536.

The previous prime is 2645551. The next prime is 2645561. The reversal of 2645560 is 655462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44811 + ... + 44869.

2^2645560 is an apocalyptic number.

2645560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2645560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3186900).

2645560 is an abundant number, since it is smaller than the sum of its proper divisors (3728240).

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

2645560 is a wasteful number, since it uses less digits than its factorization.

2645560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2645560 is about 1626.5177527466. The cubic root of 2645560 is about 138.3054217004.

The spelling of 2645560 in words is "two million, six hundred forty-five thousand, five hundred sixty".