2640463106 has 8 divisors (see below), whose sum is σ = 3963017340. Its totient is φ = 1319457328.

The previous prime is 2640462973. The next prime is 2640463123. The reversal of 2640463106 is 6013640462.

It can be written as a sum of positive squares in 2 ways, for example, as 2427040225 + 213422881 = 49265^2 + 14609^2 .

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

It is a Curzon 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, 382841 + ... + 389676.

Almost surely, 2^2640463106 is an apocalyptic number.

2640463106 is a deficient number, since it is larger than the sum of its proper divisors (1322554234).

2640463106 is a wasteful number, since it uses less digits than its factorization.

2640463106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774228.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2640463106 is about 51385.4367111928. The cubic root of 2640463106 is about 1382.1654558848.

The spelling of 2640463106 in words is "two billion, six hundred forty million, four hundred sixty-three thousand, one hundred six".