2640464464 has 20 divisors (see below), whose sum is σ = 5580982080. Its totient is φ = 1200211040.

The previous prime is 2640464443. The next prime is 2640464467. The reversal of 2640464464 is 4644640462.

It is a happy number.

It is a super-3 number, since 3×2640464464³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640464467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7501144 + ... + 7501495.

It is an arithmetic number, because the mean of its divisors is an integer number (279049104).

Almost surely, 2^2640464464 is an apocalyptic number.

It is an amenable number.

2640464464 is an abundant number, since it is smaller than the sum of its proper divisors (2940517616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640464464 is a wasteful number, since it uses less digits than its factorization.

2640464464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15002658 (or 15002652 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The square root of 2640464464 is about 51385.4499250517. The cubic root of 2640464464 is about 1382.1656928357.

The spelling of 2640464464 in words is "two billion, six hundred forty million, four hundred sixty-four thousand, four hundred sixty-four".