66226512 has 40 divisors (see below), whose sum is σ = 186639840. Its totient is φ = 20068480.

The previous prime is 66226487. The next prime is 66226529. The reversal of 66226512 is 21562266.

It is a super-2 number, since 2×66226512² = 8771901783372288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66226512.

It is a congruent 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, 62187 + ... + 63242.

It is an arithmetic number, because the mean of its divisors is an integer number (4665996).

Almost surely, 2^66226512 is an apocalyptic number.

It is an amenable number.

66226512 is an abundant number, since it is smaller than the sum of its proper divisors (120413328).

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

66226512 is a wasteful number, since it uses less digits than its factorization.

66226512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125451 (or 125445 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 66226512 is about 8137.9673137707. The cubic root of 66226512 is about 404.5857920351.

Adding to 66226512 its reverse (21562266), we get a palindrome (87788778).

The spelling of 66226512 in words is "sixty-six million, two hundred twenty-six thousand, five hundred twelve".