68170857 has 8 divisors (see below), whose sum is σ = 90941280. Its totient is φ = 45423840.

The previous prime is 68170849. The next prime is 68170937. The reversal of 68170857 is 75807186.

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

It is not a de Polignac number, because 68170857 - 2³ = 68170849 is a prime.

It is a super-2 number, since 2×68170857² = 9294531488228898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68170807) 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, 2757 + ... + 11997.

It is an arithmetic number, because the mean of its divisors is an integer number (11367660).

Almost surely, 2^68170857 is an apocalyptic number.

It is an amenable number.

68170857 is a deficient number, since it is larger than the sum of its proper divisors (22770423).

68170857 is a wasteful number, since it uses less digits than its factorization.

68170857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11703.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 68170857 is about 8256.5644792492. The cubic root of 68170857 is about 408.5070768979.

The spelling of 68170857 in words is "sixty-eight million, one hundred seventy thousand, eight hundred fifty-seven".