68857319 has 8 divisors (see below), whose sum is σ = 70575120. Its totient is φ = 67144896.

The previous prime is 68857309. The next prime is 68857367. The reversal of 68857319 is 91375886.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 68857319 - 2¹⁶ = 68791783 is a prime.

It is a super-2 number, since 2×68857319² = 9482660759735522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68857309) 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, 39437 + ... + 41145.

It is an arithmetic number, because the mean of its divisors is an integer number (8821890).

Almost surely, 2^68857319 is an apocalyptic number.

68857319 is a deficient number, since it is larger than the sum of its proper divisors (1717801).

68857319 is a wasteful number, since it uses less digits than its factorization.

68857319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its digits is 362880, while the sum is 47.

The square root of 68857319 is about 8298.0310315158. The cubic root of 68857319 is about 409.8736850621.

The spelling of 68857319 in words is "sixty-eight million, eight hundred fifty-seven thousand, three hundred nineteen".