2640797 has 8 divisors (see below), whose sum is σ = 2886912. Its totient is φ = 2404800.

The previous prime is 2640779. The next prime is 2640821. The reversal of 2640797 is 7970462.

2640797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640797 - 2¹⁰ = 2639773 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 (2640707) 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 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 3032.

It is an arithmetic number, because the mean of its divisors is an integer number (360864).

2^2640797 is an apocalyptic number.

It is an amenable number.

2640797 is a deficient number, since it is larger than the sum of its proper divisors (246115).

2640797 is a wasteful number, since it uses less digits than its factorization.

2640797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5059.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 2640797 is about 1625.0529222152. The cubic root of 2640797 is about 138.2223713001. Note that the first 3 decimals are identical.

The spelling of 2640797 in words is "two million, six hundred forty thousand, seven hundred ninety-seven".