2640430564 has 12 divisors (see below), whose sum is σ = 4622398704. Its totient is φ = 1319745224.

The previous prime is 2640430489. The next prime is 2640430571. The reversal of 2640430564 is 4650340462.

2640430564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 104722 + ... + 127465.

It is an arithmetic number, because the mean of its divisors is an integer number (385199892).

Almost surely, 2^2640430564 is an apocalyptic number.

It is an amenable number.

2640430564 is a deficient number, since it is larger than the sum of its proper divisors (1981968140).

2640430564 is a wasteful number, since it uses less digits than its factorization.

2640430564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235034 (or 235032 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 2640430564 is about 51385.1200640808. The cubic root of 2640430564 is about 1382.1597777631.

The spelling of 2640430564 in words is "two billion, six hundred forty million, four hundred thirty thousand, five hundred sixty-four".