165026066 has 24 divisors (see below), whose sum is σ = 262731924. Its totient is φ = 77692160.

The previous prime is 165026053. The next prime is 165026087. The reversal of 165026066 is 660620561.

It can be written as a sum of positive squares in 6 ways, for example, as 6996025 + 158030041 = 2645^2 + 12571^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67766 + ... + 70158.

Almost surely, 2^165026066 is an apocalyptic number.

165026066 is a deficient number, since it is larger than the sum of its proper divisors (97705858).

165026066 is a wasteful number, since it uses less digits than its factorization.

165026066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 165026066 is about 12846.2471562710. The cubic root of 165026066 is about 548.5095359382.

The spelling of 165026066 in words is "one hundred sixty-five million, twenty-six thousand, sixty-six".