166656226 has 32 divisors (see below), whose sum is σ = 283300416. Its totient is φ = 72864000.

The previous prime is 166656223. The next prime is 166656227. The reversal of 166656226 is 622656661.

It is a super-3 number, since 3×166656226³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (166656223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 64581 + ... + 67111.

It is an arithmetic number, because the mean of its divisors is an integer number (8853138).

Almost surely, 2^166656226 is an apocalyptic number.

166656226 is a deficient number, since it is larger than the sum of its proper divisors (116644190).

166656226 is a wasteful number, since it uses less digits than its factorization.

166656226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658.

The product of its digits is 155520, while the sum is 40.

The square root of 166656226 is about 12909.5401157439. The cubic root of 166656226 is about 550.3097164686.

The spelling of 166656226 in words is "one hundred sixty-six million, six hundred fifty-six thousand, two hundred twenty-six".