64945293 has 16 divisors (see below), whose sum is σ = 99255936. Its totient is φ = 37002240.

The previous prime is 64945291. The next prime is 64945319. The reversal of 64945293 is 39254946.

It is not a de Polignac number, because 64945293 - 2¹ = 64945291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64945291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3033 + ... + 11793.

It is an arithmetic number, because the mean of its divisors is an integer number (6203496).

Almost surely, 2^64945293 is an apocalyptic number.

It is an amenable number.

64945293 is a deficient number, since it is larger than the sum of its proper divisors (34310643).

64945293 is a wasteful number, since it uses less digits than its factorization.

64945293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9124.

The product of its digits is 233280, while the sum is 42.

The square root of 64945293 is about 8058.8642500045. The cubic root of 64945293 is about 401.9597432523.

The spelling of 64945293 in words is "sixty-four million, nine hundred forty-five thousand, two hundred ninety-three".