2640953 has 6 divisors (see below), whose sum is σ = 3072186. Its totient is φ = 2263632.

The previous prime is 2640947. The next prime is 2640959. The reversal of 2640953 is 3590462.

It is an interprime number because it is at equal distance from previous prime (2640947) and next prime (2640959).

It can be written as a sum of positive squares in only one way, i.e., 2458624 + 182329 = 1568^2 + 427^2 .

It is not a de Polignac number, because 2640953 - 2⁶ = 2640889 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 26900 + ... + 26997.

It is an arithmetic number, because the mean of its divisors is an integer number (512031).

2^2640953 is an apocalyptic number.

It is an amenable number.

2640953 is a deficient number, since it is larger than the sum of its proper divisors (431233).

2640953 is an equidigital number, since it uses as much as digits as its factorization.

2640953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53911 (or 53904 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2640953 is about 1625.1009199431. The cubic root of 2640953 is about 138.2250929867.

It can be divided in two parts, 26409 and 53, that added together give a palindrome (26462).

The spelling of 2640953 in words is "two million, six hundred forty thousand, nine hundred fifty-three".