664528301 has 4 divisors (see below), whose sum is σ = 687443100. Its totient is φ = 641613504.

The previous prime is 664528297. The next prime is 664528303. The reversal of 664528301 is 103825466.

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

It can be written as a sum of positive squares in 2 ways, for example, as 117202276 + 547326025 = 10826^2 + 23395^2 .

It is a cyclic number.

It is not a de Polignac number, because 664528301 - 2² = 664528297 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 (664528303) 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, 11457356 + ... + 11457413.

It is an arithmetic number, because the mean of its divisors is an integer number (171860775).

Almost surely, 2^664528301 is an apocalyptic number.

It is an amenable number.

664528301 is a deficient number, since it is larger than the sum of its proper divisors (22914799).

664528301 is a wasteful number, since it uses less digits than its factorization.

664528301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22914798.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 664528301 is about 25778.4464427164. The cubic root of 664528301 is about 872.6454470813.

The spelling of 664528301 in words is "six hundred sixty-four million, five hundred twenty-eight thousand, three hundred one".