64943013 has 8 divisors (see below), whose sum is σ = 86632128. Its totient is φ = 43274624.

The previous prime is 64943003. The next prime is 64943017. The reversal of 64943013 is 31034946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64943013 - 2²⁴ = 48165797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64943017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4981 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (10829016).

Almost surely, 2^64943013 is an apocalyptic number.

It is an amenable number.

64943013 is a deficient number, since it is larger than the sum of its proper divisors (21689115).

64943013 is a wasteful number, since it uses less digits than its factorization.

64943013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 64943013 is about 8058.7227896237. The cubic root of 64943013 is about 401.9550394013.

Adding to 64943013 its reverse (31034946), we get a palindrome (95977959).

The spelling of 64943013 in words is "sixty-four million, nine hundred forty-three thousand, thirteen".