6646006466 has 32 divisors (see below), whose sum is σ = 11462169600. Its totient is φ = 2858291280.

The previous prime is 6646006463. The next prime is 6646006483.

6646006466 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6646006466² = 88338803892227618312, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6646006463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334355 + ... + 353673.

It is an arithmetic number, because the mean of its divisors is an integer number (358192800).

Almost surely, 2^6646006466 is an apocalyptic number.

6646006466 is a deficient number, since it is larger than the sum of its proper divisors (4816163134).

6646006466 is a wasteful number, since it uses less digits than its factorization.

6646006466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20174.

The product of its (nonzero) digits is 746496, while the sum is 44.

The square root of 6646006466 is about 81523.0425462642. The cubic root of 6646006466 is about 1880.1258466006.

The spelling of 6646006466 in words is "six billion, six hundred forty-six million, six thousand, four hundred sixty-six".