165664226 has 32 divisors (see below), whose sum is σ = 307093248. Its totient is φ = 65269440.

The previous prime is 165664199. The next prime is 165664243. The reversal of 165664226 is 622466561.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 165664226.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46136 + ... + 49596.

It is an arithmetic number, because the mean of its divisors is an integer number (9596664).

Almost surely, 2^165664226 is an apocalyptic number.

165664226 is a deficient number, since it is larger than the sum of its proper divisors (141429022).

165664226 is a wasteful number, since it uses less digits than its factorization.

165664226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746.

The product of its digits is 103680, while the sum is 38.

The square root of 165664226 is about 12871.0615723801. The cubic root of 165664226 is about 549.2156599672.

The spelling of 165664226 in words is "one hundred sixty-five million, six hundred sixty-four thousand, two hundred twenty-six".