68939331 has 8 divisors (see below), whose sum is σ = 91966464. Its totient is φ = 45935880.

The previous prime is 68939329. The next prime is 68939347. The reversal of 68939331 is 13393986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68939331 - 2¹ = 68939329 is a prime.

It is a super-2 number, since 2×68939331² = 9505262717455122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68979331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2646 + ... + 12036.

It is an arithmetic number, because the mean of its divisors is an integer number (11495808).

Almost surely, 2^68939331 is an apocalyptic number.

68939331 is a deficient number, since it is larger than the sum of its proper divisors (23027133).

68939331 is a wasteful number, since it uses less digits than its factorization.

68939331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11841.

The product of its digits is 104976, while the sum is 42.

The square root of 68939331 is about 8302.9712151735. The cubic root of 68939331 is about 410.0363461730.

The spelling of 68939331 in words is "sixty-eight million, nine hundred thirty-nine thousand, three hundred thirty-one".