165090766 has 16 divisors (see below), whose sum is σ = 252149040. Its totient is φ = 81046080.

The previous prime is 165090763. The next prime is 165090767. The reversal of 165090766 is 667090561.

It is a super-2 number, since 2×165090766² = 54509922036933512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165090763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103765 + ... + 105343.

It is an arithmetic number, because the mean of its divisors is an integer number (15759315).

Almost surely, 2^165090766 is an apocalyptic number.

165090766 is a deficient number, since it is larger than the sum of its proper divisors (87058274).

165090766 is a wasteful number, since it uses less digits than its factorization.

165090766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 165090766 is about 12848.7651546754. The cubic root of 165090766 is about 548.5812093228.

It can be divided in two parts, 1650 and 90766, that added together give a square (92416 = 304²).

The spelling of 165090766 in words is "one hundred sixty-five million, ninety thousand, seven hundred sixty-six".