664122301 has 4 divisors (see below), whose sum is σ = 687023100. Its totient is φ = 641221504.

The previous prime is 664122299. The next prime is 664122307. The reversal of 664122301 is 103221466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 103221466 = 2 ⋅51610733.

It can be written as a sum of positive squares in 2 ways, for example, as 387066276 + 277056025 = 19674^2 + 16645^2 .

It is a cyclic number.

It is not a de Polignac number, because 664122301 - 2¹ = 664122299 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 (664122307) 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, 11450356 + ... + 11450413.

It is an arithmetic number, because the mean of its divisors is an integer number (171755775).

Almost surely, 2^664122301 is an apocalyptic number.

It is an amenable number.

664122301 is a deficient number, since it is larger than the sum of its proper divisors (22900799).

664122301 is a wasteful number, since it uses less digits than its factorization.

664122301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22900798.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 664122301 is about 25770.5704438222. The cubic root of 664122301 is about 872.4676938145.

Adding to 664122301 its reverse (103221466), we get a palindrome (767343767).

The spelling of 664122301 in words is "six hundred sixty-four million, one hundred twenty-two thousand, three hundred one".