68823831 has 4 divisors (see below), whose sum is σ = 91765112. Its totient is φ = 45882552.

The previous prime is 68823827. The next prime is 68823857. The reversal of 68823831 is 13832886.

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

It is not a de Polignac number, because 68823831 - 2² = 68823827 is a prime.

It is a super-2 number, since 2×68823831² = 9473439427033122, which contains 22 as substring.

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 68823831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68823631) 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, 11470636 + ... + 11470641.

It is an arithmetic number, because the mean of its divisors is an integer number (22941278).

Almost surely, 2^68823831 is an apocalyptic number.

68823831 is a deficient number, since it is larger than the sum of its proper divisors (22941281).

68823831 is a wasteful number, since it uses less digits than its factorization.

68823831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22941280.

The product of its digits is 55296, while the sum is 39.

The square root of 68823831 is about 8296.0129580420. The cubic root of 68823831 is about 409.8072284340.

The spelling of 68823831 in words is "sixty-eight million, eight hundred twenty-three thousand, eight hundred thirty-one".