66422246 has 32 divisors (see below), whose sum is σ = 111041280. Its totient is φ = 29548000.

The previous prime is 66422219. The next prime is 66422249. The reversal of 66422246 is 64222466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66422249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370985 + ... + 371163.

It is an arithmetic number, because the mean of its divisors is an integer number (3470040).

Almost surely, 2^66422246 is an apocalyptic number.

66422246 is a deficient number, since it is larger than the sum of its proper divisors (44619034).

66422246 is a wasteful number, since it uses less digits than its factorization.

66422246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460.

The product of its digits is 27648, while the sum is 32.

The square root of 66422246 is about 8149.9844171630. The cubic root of 66422246 is about 404.9839875801.

It can be divided in two parts, 6642 and 2246, that added together give a palindrome (8888).

The spelling of 66422246 in words is "sixty-six million, four hundred twenty-two thousand, two hundred forty-six".