66959226 has 48 divisors (see below), whose sum is σ = 154911744. Its totient is φ = 20829312.

The previous prime is 66959203. The next prime is 66959251. The reversal of 66959226 is 62295966.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38001 + ... + 39723.

It is an arithmetic number, because the mean of its divisors is an integer number (3227328).

Almost surely, 2^66959226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66959226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77455872).

66959226 is an abundant number, since it is smaller than the sum of its proper divisors (87952518).

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

66959226 is a wasteful number, since it uses less digits than its factorization.

66959226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875 (or 1872 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 66959226 is about 8182.8617243602. The cubic root of 66959226 is about 406.0724024985.

It can be divided in two parts, 669 and 59226, that added together give a palindrome (59895).

The spelling of 66959226 in words is "sixty-six million, nine hundred fifty-nine thousand, two hundred twenty-six".