165366366 has 64 divisors (see below), whose sum is σ = 385814016. Its totient is φ = 46745600.

The previous prime is 165366353. The next prime is 165366371. The reversal of 165366366 is 663663561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60910 + ... + 63566.

It is an arithmetic number, because the mean of its divisors is an integer number (6028344).

Almost surely, 2^165366366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165366366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192907008).

165366366 is an abundant number, since it is smaller than the sum of its proper divisors (220447650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165366366 is a wasteful number, since it uses less digits than its factorization.

165366366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its digits is 349920, while the sum is 42.

The square root of 165366366 is about 12859.4854484929. The cubic root of 165366366 is about 548.8863039727.

The spelling of 165366366 in words is "one hundred sixty-five million, three hundred sixty-six thousand, three hundred sixty-six".