68850931 has 4 divisors (see below), whose sum is σ = 70530264. Its totient is φ = 67171600.

The previous prime is 68850919. The next prime is 68850941. The reversal of 68850931 is 13905886.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68850931 - 2²¹ = 66753779 is a prime.

It is a super-3 number, since 3×68850931³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68850941) 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 3 ways as a sum of consecutive naturals, for example, 839605 + ... + 839686.

It is an arithmetic number, because the mean of its divisors is an integer number (17632566).

Almost surely, 2^68850931 is an apocalyptic number.

68850931 is a deficient number, since it is larger than the sum of its proper divisors (1679333).

68850931 is a wasteful number, since it uses less digits than its factorization.

68850931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679332.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 68850931 is about 8297.6461120007. The cubic root of 68850931 is about 409.8610097981.

The spelling of 68850931 in words is "sixty-eight million, eight hundred fifty thousand, nine hundred thirty-one".