64223811 has 24 divisors (see below), whose sum is σ = 95437056. Its totient is φ = 41595120.

The previous prime is 64223791. The next prime is 64223813. The reversal of 64223811 is 11832246.

64223811 is a `hidden beast` number, since 642 + 2 + 3 + 8 + 11 = 666.

It is not a de Polignac number, because 64223811 - 2¹⁷ = 64092739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64223813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101466 + ... + 102096.

It is an arithmetic number, because the mean of its divisors is an integer number (3976544).

Almost surely, 2^64223811 is an apocalyptic number.

64223811 is a deficient number, since it is larger than the sum of its proper divisors (31213245).

64223811 is a wasteful number, since it uses less digits than its factorization.

64223811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 940 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 64223811 is about 8013.9759794998. The cubic root of 64223811 is about 400.4657304441.

The spelling of 64223811 in words is "sixty-four million, two hundred twenty-three thousand, eight hundred eleven".