5640949464 has 24 divisors (see below), whose sum is σ = 14103293580. Its totient is φ = 1880193840.

The previous prime is 5640949439. The next prime is 5640949481. The reversal of 5640949464 is 4649490465.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360279 + ... + 375609.

Almost surely, 2^5640949464 is an apocalyptic number.

It is an amenable number.

5640949464 is an abundant number, since it is smaller than the sum of its proper divisors (8462344116).

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

5640949464 is an frugal number, since it uses more digits than its factorization.

5640949464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30671 (or 15336 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The square root of 5640949464 is about 75106.2544932178. The cubic root of 5640949464 is about 1780.1259709695.

The spelling of 5640949464 in words is "five billion, six hundred forty million, nine hundred forty-nine thousand, four hundred sixty-four".