66223116 has 24 divisors (see below), whose sum is σ = 171689840. Its totient is φ = 22074336.

The previous prime is 66223103. The next prime is 66223121. The reversal of 66223116 is 61132266.

66223116 is a `hidden beast` number, since 6 + 622 + 31 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 66223116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306481 + ... + 306696.

Almost surely, 2^66223116 is an apocalyptic number.

It is an amenable number.

66223116 is an abundant number, since it is smaller than the sum of its proper divisors (105466724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66223116 is a wasteful number, since it uses less digits than its factorization.

66223116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613190 (or 613182 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 66223116 is about 8137.7586594836. The cubic root of 66223116 is about 404.5788763916.

The spelling of 66223116 in words is "sixty-six million, two hundred twenty-three thousand, one hundred sixteen".