2646468666 has 32 divisors (see below), whose sum is σ = 5884894080. Its totient is φ = 881578368.

The previous prime is 2646468653. The next prime is 2646468673. The reversal of 2646468666 is 6668646462.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71530 + ... + 102026.

It is an arithmetic number, because the mean of its divisors is an integer number (183902940).

Almost surely, 2^2646468666 is an apocalyptic number.

2646468666 is an abundant number, since it is smaller than the sum of its proper divisors (3238425414).

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

2646468666 is a wasteful number, since it uses less digits than its factorization.

2646468666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32115 (or 32109 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 54.

The square root of 2646468666 is about 51443.8399227740. The cubic root of 2646468666 is about 1383.2125439734.

The spelling of 2646468666 in words is "two billion, six hundred forty-six million, four hundred sixty-eight thousand, six hundred sixty-six".