165662867 has 2 divisors, whose sum is σ = 165662868. Its totient is φ = 165662866.

The previous prime is 165662863. The next prime is 165662869. The reversal of 165662867 is 768266561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165662867 - 2² = 165662863 is a prime.

Together with 165662869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165662863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82831433 + 82831434.

It is an arithmetic number, because the mean of its divisors is an integer number (82831434).

Almost surely, 2^165662867 is an apocalyptic number.

165662867 is a deficient number, since it is larger than the sum of its proper divisors (1).

165662867 is an equidigital number, since it uses as much as digits as its factorization.

165662867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 165662867 is about 12871.0087794236. The cubic root of 165662867 is about 549.2141581621.

The spelling of 165662867 in words is "one hundred sixty-five million, six hundred sixty-two thousand, eight hundred sixty-seven".