2640956 has 12 divisors (see below), whose sum is σ = 4639992. Its totient is φ = 1315248.

The previous prime is 2640947. The next prime is 2640959. The reversal of 2640956 is 6590462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 2298.

It is an arithmetic number, because the mean of its divisors is an integer number (386666).

2^2640956 is an apocalyptic number.

It is an amenable number.

2640956 is a deficient number, since it is larger than the sum of its proper divisors (1999036).

2640956 is a wasteful number, since it uses less digits than its factorization.

2640956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620 (or 2618 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2640956 is about 1625.1018429625. The cubic root of 2640956 is about 138.2251453258.

The spelling of 2640956 in words is "two million, six hundred forty thousand, nine hundred fifty-six".