2646532664 has 32 divisors (see below), whose sum is σ = 5256828720. Its totient is φ = 1244791296.

The previous prime is 2646532661. The next prime is 2646532673. The reversal of 2646532664 is 4662356462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646532661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361262 + ... + 368514.

Almost surely, 2^2646532664 is an apocalyptic number.

It is an amenable number.

2646532664 is a deficient number, since it is larger than the sum of its proper divisors (2610296056).

2646532664 is a wasteful number, since it uses less digits than its factorization.

2646532664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9959 (or 9955 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 44.

The square root of 2646532664 is about 51444.4619371221. The cubic root of 2646532664 is about 1383.2236936895.

The spelling of 2646532664 in words is "two billion, six hundred forty-six million, five hundred thirty-two thousand, six hundred sixty-four".