64968291 has 8 divisors (see below), whose sum is σ = 96249360. Its totient is φ = 43312176.

The previous prime is 64968289. The next prime is 64968311. The reversal of 64968291 is 19286946.

It is a happy number.

It is not a de Polignac number, because 64968291 - 2¹ = 64968289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64968221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1203090 + ... + 1203143.

It is an arithmetic number, because the mean of its divisors is an integer number (12031170).

Almost surely, 2^64968291 is an apocalyptic number.

64968291 is a deficient number, since it is larger than the sum of its proper divisors (31281069).

64968291 is a wasteful number, since it uses less digits than its factorization.

64968291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406242 (or 2406236 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 64968291 is about 8060.2909997096. The cubic root of 64968291 is about 402.0071840997.

The spelling of 64968291 in words is "sixty-four million, nine hundred sixty-eight thousand, two hundred ninety-one".