64936943 has 2 divisors, whose sum is σ = 64936944. Its totient is φ = 64936942.

The previous prime is 64936933. The next prime is 64936967. The reversal of 64936943 is 34963946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64936943 - 2⁸ = 64936687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64936894 and 64936903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64936903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32468471 + 32468472.

It is an arithmetic number, because the mean of its divisors is an integer number (32468472).

Almost surely, 2^64936943 is an apocalyptic number.

64936943 is a deficient number, since it is larger than the sum of its proper divisors (1).

64936943 is an equidigital number, since it uses as much as digits as its factorization.

64936943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 44.

The square root of 64936943 is about 8058.3461702759. The cubic root of 64936943 is about 401.9425158929.

The spelling of 64936943 in words is "sixty-four million, nine hundred thirty-six thousand, nine hundred forty-three".