66203226 has 12 divisors (see below), whose sum is σ = 143440362. Its totient is φ = 22067736.

The previous prime is 66203183. The next prime is 66203237. The reversal of 66203226 is 62230266.

It is a happy number.

66203226 is a `hidden beast` number, since 6 + 620 + 32 + 2 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 1320201 = 8055^2 + 1149^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66203226.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1838961 + ... + 1838996.

Almost surely, 2^66203226 is an apocalyptic number.

66203226 is an abundant number, since it is smaller than the sum of its proper divisors (77237136).

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

66203226 is a wasteful number, since it uses less digits than its factorization.

66203226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677965 (or 3677962 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 66203226 is about 8136.5364867368. The cubic root of 66203226 is about 404.5383674771.

The spelling of 66203226 in words is "sixty-six million, two hundred three thousand, two hundred twenty-six".