66227020 has 24 divisors (see below), whose sum is σ = 139230000. Its totient is φ = 26461632.

The previous prime is 66227017. The next prime is 66227047. The reversal of 66227020 is 2072266.

It is a happy number.

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, 33006 + ... + 34954.

It is an arithmetic number, because the mean of its divisors is an integer number (5801250).

Almost surely, 2^66227020 is an apocalyptic number.

It is an amenable number.

66227020 is an abundant number, since it is smaller than the sum of its proper divisors (73002980).

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

66227020 is a wasteful number, since it uses less digits than its factorization.

66227020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657 (or 3655 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 66227020 is about 8137.9985254361. The cubic root of 66227020 is about 404.5868265103.

Adding to 66227020 its reverse (2072266), we get a palindrome (68299286).

The spelling of 66227020 in words is "sixty-six million, two hundred twenty-seven thousand, twenty".