6640000466 has 16 divisors (see below), whose sum is σ = 10866804480. Its totient is φ = 3017807280.

The previous prime is 6640000439. The next prime is 6640000489.

6640000466 = 12263² + 12264² + ... + 12306².

It is a happy number.

6640000466 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244895 + ... + 270653.

It is an arithmetic number, because the mean of its divisors is an integer number (679175280).

Almost surely, 2^6640000466 is an apocalyptic number.

6640000466 is a deficient number, since it is larger than the sum of its proper divisors (4226804014).

6640000466 is a wasteful number, since it uses less digits than its factorization.

6640000466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37489.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6640000466 is about 81486.1980092334. The cubic root of 6640000466 is about 1879.5593189602.

It can be divided in two parts, 6640000 and 466, that added together give a palindrome (6640466).

The spelling of 6640000466 in words is "six billion, six hundred forty million, four hundred sixty-six", and thus it is an aban number.