66226602 has 64 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 19353600.

The previous prime is 66226583. The next prime is 66226651. The reversal of 66226602 is 20662266.

It is a self number, because there is not a number n which added to its sum of digits gives 66226602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147274 + ... + 147722.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^66226602 is an apocalyptic number.

66226602 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 66226602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74995200).

66226602 is an abundant number, since it is smaller than the sum of its proper divisors (83763798).

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

66226602 is a wasteful number, since it uses less digits than its factorization.

66226602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 66226602 is about 8137.9728434052. The cubic root of 66226602 is about 404.5859753086.

Adding to 66226602 its reverse (20662266), we get a palindrome (86888868).

The spelling of 66226602 in words is "sixty-six million, two hundred twenty-six thousand, six hundred two".