6466422666 has 32 divisors (see below), whose sum is σ = 14452675776. Its totient is φ = 1911728000.

The previous prime is 6466422643. The next prime is 6466422673. The reversal of 6466422666 is 6662246646.

It is a Curzon 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, 1192125 + ... + 1197536.

It is an arithmetic number, because the mean of its divisors is an integer number (451646118).

Almost surely, 2^6466422666 is an apocalyptic number.

6466422666 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6466422666 is an abundant number, since it is smaller than the sum of its proper divisors (7986253110).

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

6466422666 is a wasteful number, since it uses less digits than its factorization.

6466422666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389718.

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

The square root of 6466422666 is about 80414.0700748321. The cubic root of 6466422666 is about 1863.0364963841.

The spelling of 6466422666 in words is "six billion, four hundred sixty-six million, four hundred twenty-two thousand, six hundred sixty-six".