2646326664 has 48 divisors (see below), whose sum is σ = 7169510400. Its totient is φ = 881816544.

The previous prime is 2646326659. The next prime is 2646326689. The reversal of 2646326664 is 4666236462.

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 392877 + ... + 399555.

It is an arithmetic number, because the mean of its divisors is an integer number (149364800).

Almost surely, 2^2646326664 is an apocalyptic number.

2646326664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2646326664 is an abundant number, since it is smaller than the sum of its proper divisors (4523183736).

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

2646326664 is a wasteful number, since it uses less digits than its factorization.

2646326664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194 (or 12187 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 45.

The square root of 2646326664 is about 51442.4597390133. The cubic root of 2646326664 is about 1383.1878037773.

The spelling of 2646326664 in words is "two billion, six hundred forty-six million, three hundred twenty-six thousand, six hundred sixty-four".