64422263 has 4 divisors (see below), whose sum is σ = 64914168. Its totient is φ = 63930360.

The previous prime is 64422257. The next prime is 64422271. The reversal of 64422263 is 36222446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64422263 is a prime.

It is a super-3 number, since 3×64422263³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64422233) 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, 245756 + ... + 246017.

It is an arithmetic number, because the mean of its divisors is an integer number (16228542).

Almost surely, 2^64422263 is an apocalyptic number.

64422263 is a deficient number, since it is larger than the sum of its proper divisors (491905).

64422263 is a wasteful number, since it uses less digits than its factorization.

64422263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491904.

The product of its digits is 13824, while the sum is 29.

The square root of 64422263 is about 8026.3480487704. The cubic root of 64422263 is about 400.8777868997.

The spelling of 64422263 in words is "sixty-four million, four hundred twenty-two thousand, two hundred sixty-three".