2640373 has 4 divisors (see below), whose sum is σ = 2779360. Its totient is φ = 2501388.

The previous prime is 2640371. The next prime is 2640383. The reversal of 2640373 is 3730462.

2640373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2640373 - 2¹ = 2640371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69465 + ... + 69502.

It is an arithmetic number, because the mean of its divisors is an integer number (694840).

2^2640373 is an apocalyptic number.

It is an amenable number.

2640373 is a deficient number, since it is larger than the sum of its proper divisors (138987).

2640373 is a wasteful number, since it uses less digits than its factorization.

2640373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138986.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 2640373 is about 1624.9224596885. The cubic root of 2640373 is about 138.2149733540.

The spelling of 2640373 in words is "two million, six hundred forty thousand, three hundred seventy-three".