165670411 has 4 divisors (see below), whose sum is σ = 165873024. Its totient is φ = 165467800.

The previous prime is 165670409. The next prime is 165670469. The reversal of 165670411 is 114076561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114076561 = 4801 ⋅23761.

It is a cyclic number.

It is not a de Polignac number, because 165670411 - 2¹ = 165670409 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165670811) 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, 100075 + ... + 101716.

It is an arithmetic number, because the mean of its divisors is an integer number (41468256).

Almost surely, 2^165670411 is an apocalyptic number.

165670411 is a deficient number, since it is larger than the sum of its proper divisors (202613).

165670411 is an equidigital number, since it uses as much as digits as its factorization.

165670411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202612.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 165670411 is about 12871.3018378096. The cubic root of 165670411 is about 549.2224947893. Note that the first 3 decimals are identical.

The spelling of 165670411 in words is "one hundred sixty-five million, six hundred seventy thousand, four hundred eleven".