66562226 has 8 divisors (see below), whose sum is σ = 100361244. Its totient is φ = 33108480.

The previous prime is 66562219. The next prime is 66562231. The reversal of 66562226 is 62226566.

It can be written as a sum of positive squares in 2 ways, for example, as 66406201 + 156025 = 8149^2 + 395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85835 + ... + 86606.

Almost surely, 2^66562226 is an apocalyptic number.

66562226 is a deficient number, since it is larger than the sum of its proper divisors (33799018).

66562226 is a wasteful number, since it uses less digits than its factorization.

66562226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172636.

The product of its digits is 51840, while the sum is 35.

The square root of 66562226 is about 8158.5676438944. The cubic root of 66562226 is about 405.2682792919.

The spelling of 66562226 in words is "sixty-six million, five hundred sixty-two thousand, two hundred twenty-six".