664080466 has 16 divisors (see below), whose sum is σ = 1154459520. Its totient is φ = 280596960.

The previous prime is 664080463. The next prime is 664080467.

664080466 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (664080463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333051 + ... + 335038.

It is an arithmetic number, because the mean of its divisors is an integer number (72153720).

Almost surely, 2^664080466 is an apocalyptic number.

664080466 is a deficient number, since it is larger than the sum of its proper divisors (490379054).

664080466 is a wasteful number, since it uses less digits than its factorization.

664080466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668169.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 664080466 is about 25769.7587493558. The cubic root of 664080466 is about 872.4493736686.

The spelling of 664080466 in words is "six hundred sixty-four million, eighty thousand, four hundred sixty-six".