664266201 has 32 divisors (see below), whose sum is σ = 950231040. Its totient is φ = 411537024.

The previous prime is 664266167. The next prime is 664266203. The reversal of 664266201 is 102662466.

It is not a de Polignac number, because 664266201 - 2⁶ = 664266137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664266203) 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 31 ways as a sum of consecutive naturals, for example, 1094040 + ... + 1094646.

It is an arithmetic number, because the mean of its divisors is an integer number (29694720).

Almost surely, 2^664266201 is an apocalyptic number.

It is an amenable number.

664266201 is a deficient number, since it is larger than the sum of its proper divisors (285964839).

664266201 is a wasteful number, since it uses less digits than its factorization.

664266201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 664266201 is about 25773.3622370074. The cubic root of 664266201 is about 872.5307038125.

It can be divided in two parts, 66426 and 6201, that added together give a palindrome (72627).

The spelling of 664266201 in words is "six hundred sixty-four million, two hundred sixty-six thousand, two hundred one".