64936871 has 2 divisors, whose sum is σ = 64936872. Its totient is φ = 64936870.

The previous prime is 64936853. The next prime is 64936877. The reversal of 64936871 is 17863946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64936871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64936877) 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, 32468435 + 32468436.

It is an arithmetic number, because the mean of its divisors is an integer number (32468436).

Almost surely, 2^64936871 is an apocalyptic number.

64936871 is a deficient number, since it is larger than the sum of its proper divisors (1).

64936871 is an equidigital number, since it uses as much as digits as its factorization.

64936871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 64936871 is about 8058.3417028567. The cubic root of 64936871 is about 401.9423673392.

The spelling of 64936871 in words is "sixty-four million, nine hundred thirty-six thousand, eight hundred seventy-one".