2947566664 has 64 divisors (see below), whose sum is σ = 6435158400. Its totient is φ = 1239681024.

The previous prime is 2947566649. The next prime is 2947566683. The reversal of 2947566664 is 4666657492.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650872 + ... + 655384.

It is an arithmetic number, because the mean of its divisors is an integer number (100549350).

Almost surely, 2^2947566664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2947566664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217579200).

2947566664 is an abundant number, since it is smaller than the sum of its proper divisors (3487591736).

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

2947566664 is a wasteful number, since it uses less digits than its factorization.

2947566664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4742 (or 4738 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 55.

The square root of 2947566664 is about 54291.4971611577. The cubic root of 2947566664 is about 1433.7976977955.

The spelling of 2947566664 in words is "two billion, nine hundred forty-seven million, five hundred sixty-six thousand, six hundred sixty-four".