168700023 has 8 divisors (see below), whose sum is σ = 249926000. Its totient is φ = 112466664.

The previous prime is 168699977. The next prime is 168700043. The reversal of 168700023 is 320007861.

It is not a de Polignac number, because 168700023 - 2²⁰ = 167651447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6248149 = 168700023 / (1 + 6 + 8 + 7 + 0 + 0 + 0 + 2 + 3).

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 168700023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168700043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124048 + ... + 3124101.

It is an arithmetic number, because the mean of its divisors is an integer number (31240750).

Almost surely, 2^168700023 is an apocalyptic number.

168700023 is a deficient number, since it is larger than the sum of its proper divisors (81225977).

168700023 is an equidigital number, since it uses as much as digits as its factorization.

168700023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248158 (or 6248152 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 168700023 is about 12988.4572986941. The cubic root of 168700023 is about 552.5501662713.

Adding to 168700023 its reverse (320007861), we get a palindrome (488707884).

The spelling of 168700023 in words is "one hundred sixty-eight million, seven hundred thousand, twenty-three".