64627169 has 2 divisors, whose sum is σ = 64627170. Its totient is φ = 64627168.

The previous prime is 64627153. The next prime is 64627177. The reversal of 64627169 is 96172646.

64627169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63808144 + 819025 = 7988^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 64627169 - 2⁴ = 64627153 is a prime.

It is a super-2 number, since 2×64627169² = 8353341945909122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64627139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32313584 + 32313585.

It is an arithmetic number, because the mean of its divisors is an integer number (32313585).

Almost surely, 2^64627169 is an apocalyptic number.

It is an amenable number.

64627169 is a deficient number, since it is larger than the sum of its proper divisors (1).

64627169 is an equidigital number, since it uses as much as digits as its factorization.

64627169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 64627169 is about 8039.1024996575. The cubic root of 64627169 is about 401.3023571460.

It can be divided in two parts, 6462 and 7169, that added together give a palindrome (13631).

The spelling of 64627169 in words is "sixty-four million, six hundred twenty-seven thousand, one hundred sixty-nine".