2640273 has 4 divisors (see below), whose sum is σ = 3520368. Its totient is φ = 1760180.

The previous prime is 2640271. The next prime is 2640289. The reversal of 2640273 is 3720462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2640273 - 2¹ = 2640271 is a prime.

It is a D-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 3 ways as a sum of consecutive naturals, for example, 440043 + ... + 440048.

It is an arithmetic number, because the mean of its divisors is an integer number (880092).

2^2640273 is an apocalyptic number.

It is an amenable number.

2640273 is a deficient number, since it is larger than the sum of its proper divisors (880095).

2640273 is an equidigital number, since it uses as much as digits as its factorization.

2640273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880094.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 2640273 is about 1624.8916886980. The cubic root of 2640273 is about 138.2132284399.

The spelling of 2640273 in words is "two million, six hundred forty thousand, two hundred seventy-three".