2665630 has 24 divisors (see below), whose sum is σ = 5276376. Its totient is φ = 968880.

The previous prime is 2665627. The next prime is 2665667. The reversal of 2665630 is 365662.

2665630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (219849).

2^2665630 is an apocalyptic number.

2665630 is a deficient number, since it is larger than the sum of its proper divisors (2610746).

2665630 is a wasteful number, since it uses less digits than its factorization.

2665630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2665630 is about 1632.6757179550. The cubic root of 2665630 is about 138.6542829280.

Subtracting from 2665630 its reverse (365662), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 26 and 65630, that added together give a palindrome (65656).

The spelling of 2665630 in words is "two million, six hundred sixty-five thousand, six hundred thirty".