162747823 has 4 divisors (see below), whose sum is σ = 185997520. Its totient is φ = 139498128.

The previous prime is 162747769. The next prime is 162747841. The reversal of 162747823 is 328747261.

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

It is not a de Polignac number, because 162747823 - 2¹³ = 162739631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162747883) 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, 11624838 + ... + 11624851.

It is an arithmetic number, because the mean of its divisors is an integer number (46499380).

Almost surely, 2^162747823 is an apocalyptic number.

162747823 is a deficient number, since it is larger than the sum of its proper divisors (23249697).

162747823 is an equidigital number, since it uses as much as digits as its factorization.

162747823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23249696.

The product of its digits is 112896, while the sum is 40.

The square root of 162747823 is about 12757.2654985306. The cubic root of 162747823 is about 545.9737080731.

The spelling of 162747823 in words is "one hundred sixty-two million, seven hundred forty-seven thousand, eight hundred twenty-three".