4064400660 has 24 divisors (see below), whose sum is σ = 11380322016. Its totient is φ = 1083840160.

The previous prime is 4064400649. The next prime is 4064400707. The reversal of 4064400660 is 660044604.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33869946 + ... + 33870065.

It is an arithmetic number, because the mean of its divisors is an integer number (474180084).

Almost surely, 2^4064400660 is an apocalyptic number.

It is an amenable number.

4064400660 is an abundant number, since it is smaller than the sum of its proper divisors (7315921356).

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

4064400660 is a wasteful number, since it uses less digits than its factorization.

4064400660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67740023 (or 67740021 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 4064400660 is about 63752.6521801250. The cubic root of 4064400660 is about 1595.8748763410.

The spelling of 4064400660 in words is "four billion, sixty-four million, four hundred thousand, six hundred sixty".