165674 has 4 divisors (see below), whose sum is σ = 248514. Its totient is φ = 82836.

The previous prime is 165673. The next prime is 165701. The reversal of 165674 is 476561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 165649 + 25 = 407^2 + 5^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41417 + ... + 41420.

2¹⁶⁵⁶⁷⁴ is an apocalyptic number.

165674 is a deficient number, since it is larger than the sum of its proper divisors (82840).

165674 is an equidigital number, since it uses as much as digits as its factorization.

165674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82839.

The product of its digits is 5040, while the sum is 29.

The square root of 165674 is about 407.0307113720. The cubic root of 165674 is about 54.9226460787.

The spelling of 165674 in words is "one hundred sixty-five thousand, six hundred seventy-four".