66501226 has 16 divisors (see below), whose sum is σ = 108947520. Its totient is φ = 30192480.

The previous prime is 66501209. The next prime is 66501241. The reversal of 66501226 is 62210566.

It is a junction number, because it is equal to n+sod(n) for n = 66501194 and 66501203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30790 + ... + 32878.

It is an arithmetic number, because the mean of its divisors is an integer number (6809220).

Almost surely, 2^66501226 is an apocalyptic number.

66501226 is a deficient number, since it is larger than the sum of its proper divisors (42446294).

66501226 is a wasteful number, since it uses less digits than its factorization.

66501226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66501226 is about 8154.8283856866. The cubic root of 66501226 is about 405.1444406814.

The spelling of 66501226 in words is "sixty-six million, five hundred one thousand, two hundred twenty-six".