165427807 has 4 divisors (see below), whose sum is σ = 165460680. Its totient is φ = 165394936.

The previous prime is 165427793. The next prime is 165427831. The reversal of 165427807 is 708724561.

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

It is a cyclic number.

It is not a de Polignac number, because 165427807 - 2⁷ = 165427679 is a prime.

It is a Smith number, since the sum of its digits (40) 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 a self number, because there is not a number n which added to its sum of digits gives 165427807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165427897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132 + ... + 19537.

It is an arithmetic number, because the mean of its divisors is an integer number (41365170).

Almost surely, 2^165427807 is an apocalyptic number.

165427807 is a deficient number, since it is larger than the sum of its proper divisors (32873).

165427807 is an equidigital number, since it uses as much as digits as its factorization.

165427807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32872.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 165427807 is about 12861.8741635891. The cubic root of 165427807 is about 548.9542741580.

The spelling of 165427807 in words is "one hundred sixty-five million, four hundred twenty-seven thousand, eight hundred seven".