68317642 has 8 divisors (see below), whose sum is σ = 102528036. Its totient is φ = 34141632.

The previous prime is 68317609. The next prime is 68317663. The reversal of 68317642 is 24671386.

It can be written as a sum of positive squares in 2 ways, for example, as 66732561 + 1585081 = 8169^2 + 1259^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2863 + ... + 12034.

Almost surely, 2^68317642 is an apocalyptic number.

68317642 is a deficient number, since it is larger than the sum of its proper divisors (34210394).

68317642 is a wasteful number, since it uses less digits than its factorization.

68317642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17192.

The product of its digits is 48384, while the sum is 37.

The square root of 68317642 is about 8265.4486871555. The cubic root of 68317642 is about 408.8000648805.

The spelling of 68317642 in words is "sixty-eight million, three hundred seventeen thousand, six hundred forty-two".