165212266 has 8 divisors (see below), whose sum is σ = 258593184. Its totient is φ = 79014540.

The previous prime is 165212263. The next prime is 165212297. The reversal of 165212266 is 662212561.

165212266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (165212261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795740 + ... + 1795831.

It is an arithmetic number, because the mean of its divisors is an integer number (32324148).

Almost surely, 2^165212266 is an apocalyptic number.

165212266 is a deficient number, since it is larger than the sum of its proper divisors (93380918).

165212266 is a wasteful number, since it uses less digits than its factorization.

165212266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591596.

The product of its digits is 8640, while the sum is 31.

The square root of 165212266 is about 12853.4923658903. The cubic root of 165212266 is about 548.7157540423.

The spelling of 165212266 in words is "one hundred sixty-five million, two hundred twelve thousand, two hundred sixty-six".