64935943 has 4 divisors (see below), whose sum is σ = 65110408. Its totient is φ = 64761480.

The previous prime is 64935929. The next prime is 64935973. The reversal of 64935943 is 34953946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64935943 - 2²¹ = 62838791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64935943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64935973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86673 + ... + 87418.

It is an arithmetic number, because the mean of its divisors is an integer number (16277602).

Almost surely, 2^64935943 is an apocalyptic number.

64935943 is a deficient number, since it is larger than the sum of its proper divisors (174465).

64935943 is a wasteful number, since it uses less digits than its factorization.

64935943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174464.

The product of its digits is 349920, while the sum is 43.

The square root of 64935943 is about 8058.2841225660. The cubic root of 64935943 is about 401.9404526370.

The spelling of 64935943 in words is "sixty-four million, nine hundred thirty-five thousand, nine hundred forty-three".