64635331 has 2 divisors, whose sum is σ = 64635332. Its totient is φ = 64635330.

The previous prime is 64635317. The next prime is 64635353. The reversal of 64635331 is 13353646.

64635331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64635331 - 2¹³ = 64627139 is a prime.

It is a super-2 number, since 2×64635331² = 8355452026959122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64635293 and 64635302.

It is not a weakly prime, because it can be changed into another prime (64635301) 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, 32317665 + 32317666.

It is an arithmetic number, because the mean of its divisors is an integer number (32317666).

Almost surely, 2^64635331 is an apocalyptic number.

64635331 is a deficient number, since it is larger than the sum of its proper divisors (1).

64635331 is an equidigital number, since it uses as much as digits as its factorization.

64635331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 31.

The square root of 64635331 is about 8039.6101273631. The cubic root of 64635331 is about 401.3192504124.

Adding to 64635331 its reverse (13353646), we get a palindrome (77988977).

The spelling of 64635331 in words is "sixty-four million, six hundred thirty-five thousand, three hundred thirty-one".