68081817 has 8 divisors (see below), whose sum is σ = 94722624. Its totient is φ = 43414448.

The previous prime is 68081809. The next prime is 68081831. The reversal of 68081817 is 71818086.

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 68081817 - 2³ = 68081809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68011817) 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, 493278 + ... + 493415.

It is an arithmetic number, because the mean of its divisors is an integer number (11840328).

Almost surely, 2^68081817 is an apocalyptic number.

It is an amenable number.

68081817 is a deficient number, since it is larger than the sum of its proper divisors (26640807).

68081817 is a wasteful number, since it uses less digits than its factorization.

68081817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986719.

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 68081817 is about 8251.1706442177. The cubic root of 68081817 is about 408.3291449614.

The spelling of 68081817 in words is "sixty-eight million, eighty-one thousand, eight hundred seventeen".