2640773 has 4 divisors (see below), whose sum is σ = 2650860. Its totient is φ = 2630688.

The previous prime is 2640767. The next prime is 2640779. The reversal of 2640773 is 3770462.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2640767) and next prime (2640779).

It can be written as a sum of positive squares in 2 ways, for example, as 1555009 + 1085764 = 1247^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 2640773 - 2⁶ = 2640709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640779) 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, 4640 + ... + 5177.

It is an arithmetic number, because the mean of its divisors is an integer number (662715).

2^2640773 is an apocalyptic number.

It is an amenable number.

2640773 is a deficient number, since it is larger than the sum of its proper divisors (10087).

2640773 is an equidigital number, since it uses as much as digits as its factorization.

2640773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10086.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 2640773 is about 1625.0455378235. The cubic root of 2640773 is about 138.2219525696.

The spelling of 2640773 in words is "two million, six hundred forty thousand, seven hundred seventy-three".