165947 has 2 divisors, whose sum is σ = 165948. Its totient is φ = 165946.

The previous prime is 165941. The next prime is 165961. The reversal of 165947 is 749561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165947 - 2⁴ = 165931 is a prime.

It is not a weakly prime, because it can be changed into another prime (165941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82973 + 82974.

It is an arithmetic number, because the mean of its divisors is an integer number (82974).

2¹⁶⁵⁹⁴⁷ is an apocalyptic number.

165947 is a deficient number, since it is larger than the sum of its proper divisors (1).

165947 is an equidigital number, since it uses as much as digits as its factorization.

165947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 165947 is about 407.3659288649. The cubic root of 165947 is about 54.9527969658.

The spelling of 165947 in words is "one hundred sixty-five thousand, nine hundred forty-seven".