68329881 has 24 divisors (see below), whose sum is σ = 101477376. Its totient is φ = 44281440.

The previous prime is 68329867. The next prime is 68329897. The reversal of 68329881 is 18892386.

It is not a de Polignac number, because 68329881 - 2⁷ = 68329753 is a prime.

It is a super-2 number, since 2×68329881² = 9337945274948322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68329801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147991 + ... + 148451.

It is an arithmetic number, because the mean of its divisors is an integer number (4228224).

Almost surely, 2^68329881 is an apocalyptic number.

It is an amenable number.

68329881 is a deficient number, since it is larger than the sum of its proper divisors (33147495).

68329881 is a wasteful number, since it uses less digits than its factorization.

68329881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 890 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 68329881 is about 8266.1890251796. The cubic root of 68329881 is about 408.8244753895.

The spelling of 68329881 in words is "sixty-eight million, three hundred twenty-nine thousand, eight hundred eighty-one".