64243163 has 4 divisors (see below), whose sum is σ = 67036368. Its totient is φ = 61449960.

The previous prime is 64243141. The next prime is 64243169. The reversal of 64243163 is 36134246.

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 64243163 - 2¹⁴ = 64226779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64243169) 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, 1396568 + ... + 1396613.

It is an arithmetic number, because the mean of its divisors is an integer number (16759092).

Almost surely, 2^64243163 is an apocalyptic number.

64243163 is a deficient number, since it is larger than the sum of its proper divisors (2793205).

64243163 is a wasteful number, since it uses less digits than its factorization.

64243163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793204.

The product of its digits is 10368, while the sum is 29.

The square root of 64243163 is about 8015.1832792519. The cubic root of 64243163 is about 400.5059493516.

The spelling of 64243163 in words is "sixty-four million, two hundred forty-three thousand, one hundred sixty-three".