64664006 has 8 divisors (see below), whose sum is σ = 105813864. Its totient is φ = 29392720.

The previous prime is 64664003. The next prime is 64664021. The reversal of 64664006 is 60046646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64664003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469615 + ... + 1469658.

It is an arithmetic number, because the mean of its divisors is an integer number (13226733).

Almost surely, 2^64664006 is an apocalyptic number.

64664006 is a deficient number, since it is larger than the sum of its proper divisors (41149858).

64664006 is a wasteful number, since it uses less digits than its factorization.

64664006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939286.

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

The square root of 64664006 is about 8041.3932872357. The cubic root of 64664006 is about 401.3785891052.

The spelling of 64664006 in words is "sixty-four million, six hundred sixty-four thousand, six".