664654063 has 8 divisors (see below), whose sum is σ = 669425328. Its totient is φ = 659893824.

The previous prime is 664654031. The next prime is 664654073. The reversal of 664654063 is 360456466.

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

It is a cyclic number.

It is not a de Polignac number, because 664654063 - 2⁵ = 664654031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664654013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146020 + ... + 150502.

It is an arithmetic number, because the mean of its divisors is an integer number (83678166).

Almost surely, 2^664654063 is an apocalyptic number.

664654063 is a deficient number, since it is larger than the sum of its proper divisors (4771265).

664654063 is a wasteful number, since it uses less digits than its factorization.

664654063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 664654063 is about 25780.8856131825. The cubic root of 664654063 is about 872.7004930009.

The spelling of 664654063 in words is "six hundred sixty-four million, six hundred fifty-four thousand, sixty-three".