165784827 has 16 divisors (see below), whose sum is σ = 244485920. Its totient is φ = 99263232.

The previous prime is 165784819. The next prime is 165784831. The reversal of 165784827 is 728487561.

It is not a de Polignac number, because 165784827 - 2³ = 165784819 is a prime.

It is a Smith number, since the sum of its digits (48) 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 (165784427) 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 15 ways as a sum of consecutive naturals, for example, 56002 + ... + 58887.

It is an arithmetic number, because the mean of its divisors is an integer number (15280370).

Almost surely, 2^165784827 is an apocalyptic number.

165784827 is a deficient number, since it is larger than the sum of its proper divisors (78701093).

165784827 is a wasteful number, since it uses less digits than its factorization.

165784827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114942.

The product of its digits is 752640, while the sum is 48.

The square root of 165784827 is about 12875.7456871437. The cubic root of 165784827 is about 549.3489011482.

The spelling of 165784827 in words is "one hundred sixty-five million, seven hundred eighty-four thousand, eight hundred twenty-seven".