2640869464 has 16 divisors (see below), whose sum is σ = 5056984800. Its totient is φ = 1292340192.

The previous prime is 2640869411. The next prime is 2640869477. The reversal of 2640869464 is 4649680462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3511419 + ... + 3512170.

It is an arithmetic number, because the mean of its divisors is an integer number (316061550).

Almost surely, 2^2640869464 is an apocalyptic number.

It is an amenable number.

2640869464 is a deficient number, since it is larger than the sum of its proper divisors (2416115336).

2640869464 is a wasteful number, since it uses less digits than its factorization.

2640869464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7023642 (or 7023638 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 49.

The square root of 2640869464 is about 51389.3905782118. The cubic root of 2640869464 is about 1382.2363557179.

The spelling of 2640869464 in words is "two billion, six hundred forty million, eight hundred sixty-nine thousand, four hundred sixty-four".