65864223 has 6 divisors (see below), whose sum is σ = 95137224. Its totient is φ = 43909476.

The previous prime is 65864219. The next prime is 65864233. The reversal of 65864223 is 32246856.

65864223 is a `hidden beast` number, since 6 + 5 + 8 + 642 + 2 + 3 = 666.

It is not a de Polignac number, because 65864223 - 2² = 65864219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65864233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3659115 + ... + 3659132.

It is an arithmetic number, because the mean of its divisors is an integer number (15856204).

Almost surely, 2^65864223 is an apocalyptic number.

65864223 is a deficient number, since it is larger than the sum of its proper divisors (29273001).

65864223 is a wasteful number, since it uses less digits than its factorization.

65864223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7318253 (or 7318250 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 65864223 is about 8115.6776057209. The cubic root of 65864223 is about 403.8466868355.

The spelling of 65864223 in words is "sixty-five million, eight hundred sixty-four thousand, two hundred twenty-three".