2645630 has 32 divisors (see below), whose sum is σ = 5249664. Its totient is φ = 953856.

The previous prime is 2645603. The next prime is 2645639. The reversal of 2645630 is 365462.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2645630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645639) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5894 + ... + 6326.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2^2645630 is an apocalyptic number.

2645630 is a deficient number, since it is larger than the sum of its proper divisors (2604034).

2645630 is a wasteful number, since it uses less digits than its factorization.

2645630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 2645630 is about 1626.5392709677. The cubic root of 2645630 is about 138.3066415171.

The spelling of 2645630 in words is "two million, six hundred forty-five thousand, six hundred thirty".