68323873 has 4 divisors (see below), whose sum is σ = 68364100. Its totient is φ = 68283648.

The previous prime is 68323807. The next prime is 68323877. The reversal of 68323873 is 37832386.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12552849 + 55771024 = 3543^2 + 7468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68323873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68323877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17448 + ... + 21001.

It is an arithmetic number, because the mean of its divisors is an integer number (17091025).

Almost surely, 2^68323873 is an apocalyptic number.

It is an amenable number.

68323873 is a deficient number, since it is larger than the sum of its proper divisors (40227).

68323873 is a wasteful number, since it uses less digits than its factorization.

68323873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40226.

The product of its digits is 145152, while the sum is 40.

The square root of 68323873 is about 8265.8256090968. The cubic root of 68323873 is about 408.8124928844.

It can be divided in two parts, 68323 and 873, that added together give a palindrome (69196).

The spelling of 68323873 in words is "sixty-eight million, three hundred twenty-three thousand, eight hundred seventy-three".