664010563 has 4 divisors (see below), whose sum is σ = 672415840. Its totient is φ = 655605288.

The previous prime is 664010561. The next prime is 664010569. The reversal of 664010563 is 365010466.

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

It is a cyclic number.

It is not a de Polignac number, because 664010563 - 2¹ = 664010561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664010561) 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 3 ways as a sum of consecutive naturals, for example, 4202520 + ... + 4202677.

It is an arithmetic number, because the mean of its divisors is an integer number (168103960).

Almost surely, 2^664010563 is an apocalyptic number.

664010563 is a deficient number, since it is larger than the sum of its proper divisors (8405277).

664010563 is an equidigital number, since it uses as much as digits as its factorization.

664010563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405276.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 664010563 is about 25768.4024145852. The cubic root of 664010563 is about 872.4187604263.

The spelling of 664010563 in words is "six hundred sixty-four million, ten thousand, five hundred sixty-three".