68331951 has 16 divisors (see below), whose sum is σ = 102219520. Its totient is φ = 45110520.

The previous prime is 68331947. The next prime is 68332001. The reversal of 68331951 is 15913386.

It is a happy number.

It is not a de Polignac number, because 68331951 - 2² = 68331947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68331911) 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 15 ways as a sum of consecutive naturals, for example, 9505 + ... + 15066.

It is an arithmetic number, because the mean of its divisors is an integer number (6388720).

Almost surely, 2^68331951 is an apocalyptic number.

68331951 is a deficient number, since it is larger than the sum of its proper divisors (33887569).

68331951 is a wasteful number, since it uses less digits than its factorization.

68331951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24683 (or 24677 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 68331951 is about 8266.3142330787. The cubic root of 68331951 is about 408.8286036865.

The spelling of 68331951 in words is "sixty-eight million, three hundred thirty-one thousand, nine hundred fifty-one".