2640875 has 16 divisors (see below), whose sum is σ = 3390816. Its totient is φ = 2052000.

The previous prime is 2640871. The next prime is 2640881. The reversal of 2640875 is 5780462.

It is not a de Polignac number, because 2640875 - 2² = 2640871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4340 + ... + 4910.

It is an arithmetic number, because the mean of its divisors is an integer number (211926).

2^2640875 is an apocalyptic number.

2640875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2640875 is a deficient number, since it is larger than the sum of its proper divisors (749941).

2640875 is an equidigital number, since it uses as much as digits as its factorization.

2640875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2640875 is about 1625.0769212563. The cubic root of 2640875 is about 138.2237321568.

The spelling of 2640875 in words is "two million, six hundred forty thousand, eight hundred seventy-five".