664303466 has 4 divisors (see below), whose sum is σ = 996455202. Its totient is φ = 332151732.

The previous prime is 664303427. The next prime is 664303483.

664303466 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 452455441 + 211848025 = 21271^2 + 14555^2 .

It is a super-2 number, since 2×664303466² = 882598189879226312, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166075865 + ... + 166075868.

Almost surely, 2^664303466 is an apocalyptic number.

664303466 is a deficient number, since it is larger than the sum of its proper divisors (332151736).

664303466 is a wasteful number, since it uses less digits than its factorization.

664303466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332151735.

The product of its (nonzero) digits is 186624, while the sum is 38.

The square root of 664303466 is about 25774.0851632022. The cubic root of 664303466 is about 872.5470196853.

It can be divided in two parts, 66430 and 3466, that added together give a palindrome (69896).

The spelling of 664303466 in words is "six hundred sixty-four million, three hundred three thousand, four hundred sixty-six".