6646662264 has 64 divisors (see below), whose sum is σ = 18375632640. Its totient is φ = 1986543360.

The previous prime is 6646662181. The next prime is 6646662283. The reversal of 6646662264 is 4622666466.

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

It is a congruent number.

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, 153172 + ... + 191715.

It is an arithmetic number, because the mean of its divisors is an integer number (287119260).

Almost surely, 2^6646662264 is an apocalyptic number.

It is an amenable number.

6646662264 is an abundant number, since it is smaller than the sum of its proper divisors (11728970376).

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

6646662264 is a wasteful number, since it uses less digits than its factorization.

6646662264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344980 (or 344976 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 48.

The square root of 6646662264 is about 81527.0646104715. The cubic root of 6646662264 is about 1880.1876853516.

The spelling of 6646662264 in words is "six billion, six hundred forty-six million, six hundred sixty-two thousand, two hundred sixty-four".