64027631 has 2 divisors, whose sum is σ = 64027632. Its totient is φ = 64027630.

The previous prime is 64027603. The next prime is 64027651. The reversal of 64027631 is 13672046.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64027631 is a prime.

It is a super-2 number, since 2×64027631² = 8199075062944322, 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 = 64027594 and 64027603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64027651) 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 as a sum of consecutive naturals, namely, 32013815 + 32013816.

It is an arithmetic number, because the mean of its divisors is an integer number (32013816).

Almost surely, 2^64027631 is an apocalyptic number.

64027631 is a deficient number, since it is larger than the sum of its proper divisors (1).

64027631 is an equidigital number, since it uses as much as digits as its factorization.

64027631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 64027631 is about 8001.7267511457. The cubic root of 64027631 is about 400.0575563011.

Adding to 64027631 its reverse (13672046), we get a palindrome (77699677).

The spelling of 64027631 in words is "sixty-four million, twenty-seven thousand, six hundred thirty-one".