64108631 has 2 divisors, whose sum is σ = 64108632. Its totient is φ = 64108630.

The previous prime is 64108601. The next prime is 64108687. The reversal of 64108631 is 13680146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64108631 - 2¹⁰ = 64107607 is a prime.

It is a super-2 number, since 2×64108631² = 8219833137388322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64108594 and 64108603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64108601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32054315 + 32054316.

It is an arithmetic number, because the mean of its divisors is an integer number (32054316).

Almost surely, 2^64108631 is an apocalyptic number.

64108631 is a deficient number, since it is larger than the sum of its proper divisors (1).

64108631 is an equidigital number, since it uses as much as digits as its factorization.

64108631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 64108631 is about 8006.7865589136. The cubic root of 64108631 is about 400.2261866582.

Adding to 64108631 its reverse (13680146), we get a palindrome (77788777).

The spelling of 64108631 in words is "sixty-four million, one hundred eight thousand, six hundred thirty-one".