2640275 has 12 divisors (see below), whose sum is σ = 3571944. Its totient is φ = 1920000.

The previous prime is 2640271. The next prime is 2640289. The reversal of 2640275 is 5720462.

It is not a de Polignac number, because 2640275 - 2² = 2640271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4526 + ... + 5075.

It is an arithmetic number, because the mean of its divisors is an integer number (297662).

2^2640275 is an apocalyptic number.

2640275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2640275 is a deficient number, since it is larger than the sum of its proper divisors (931669).

2640275 is a wasteful number, since it uses less digits than its factorization.

2640275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9622 (or 9617 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 2640275 is about 1624.8923041236. The cubic root of 2640275 is about 138.2132633386.

The spelling of 2640275 in words is "two million, six hundred forty thousand, two hundred seventy-five".