64166223 has 16 divisors (see below), whose sum is σ = 93494016. Its totient is φ = 38821440.

The previous prime is 64166213. The next prime is 64166237. The reversal of 64166223 is 32266146.

It is not a de Polignac number, because 64166223 - 2¹² = 64162127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64166213) 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, 23211 + ... + 25827.

It is an arithmetic number, because the mean of its divisors is an integer number (5843376).

Almost surely, 2^64166223 is an apocalyptic number.

64166223 is a deficient number, since it is larger than the sum of its proper divisors (29327793).

64166223 is a wasteful number, since it uses less digits than its factorization.

64166223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374.

The product of its digits is 10368, while the sum is 30.

The square root of 64166223 is about 8010.3822006194. The cubic root of 64166223 is about 400.3459985429.

The spelling of 64166223 in words is "sixty-four million, one hundred sixty-six thousand, two hundred twenty-three".