68231217 has 32 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 40930560.

The previous prime is 68231209. The next prime is 68231231. The reversal of 68231217 is 71213286.

It is not a de Polignac number, because 68231217 - 2³ = 68231209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68231117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162634 + ... + 163052.

It is an arithmetic number, because the mean of its divisors is an integer number (3144960).

Almost surely, 2^68231217 is an apocalyptic number.

It is an amenable number.

68231217 is a deficient number, since it is larger than the sum of its proper divisors (32407503).

68231217 is a wasteful number, since it uses less digits than its factorization.

68231217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573.

The product of its digits is 4032, while the sum is 30.

The square root of 68231217 is about 8260.2189438295. The cubic root of 68231217 is about 408.6276084290.

The spelling of 68231217 in words is "sixty-eight million, two hundred thirty-one thousand, two hundred seventeen".