664466264 has 48 divisors (see below), whose sum is σ = 1581045480. Its totient is φ = 258881280.

The previous prime is 664466263. The next prime is 664466311. The reversal of 664466264 is 462664466.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664466261) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 72737 + ... + 81360.

Almost surely, 2^664466264 is an apocalyptic number.

It is an amenable number.

664466264 is an abundant number, since it is smaller than the sum of its proper divisors (916579216).

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

664466264 is a wasteful number, since it uses less digits than its factorization.

664466264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154128 (or 154117 counting only the distinct ones).

The product of its digits is 995328, while the sum is 44.

The square root of 664466264 is about 25777.2431419654. The cubic root of 664466264 is about 872.6182909817.

The spelling of 664466264 in words is "six hundred sixty-four million, four hundred sixty-six thousand, two hundred sixty-four".