165770814 has 32 divisors (see below), whose sum is σ = 364548096. Its totient is φ = 49835520.

The previous prime is 165770807. The next prime is 165770827. The reversal of 165770814 is 418077561.

165770814 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 1507 + ... + 18270.

It is an arithmetic number, because the mean of its divisors is an integer number (11392128).

Almost surely, 2^165770814 is an apocalyptic number.

165770814 is an abundant number, since it is smaller than the sum of its proper divisors (198777282).

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

165770814 is a wasteful number, since it uses less digits than its factorization.

165770814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19920.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 165770814 is about 12875.2015129861. The cubic root of 165770814 is about 549.3334227654. Note that the first 3 decimals are identical.

The spelling of 165770814 in words is "one hundred sixty-five million, seven hundred seventy thousand, eight hundred fourteen".