68045817 has 32 divisors (see below), whose sum is σ = 105883648. Its totient is φ = 38071296.

The previous prime is 68045777. The next prime is 68045839. The reversal of 68045817 is 71854086.

It is not a de Polignac number, because 68045817 - 2¹⁴ = 68029433 is a prime.

It is a super-2 number, since 2×68045817² = 9260466422394978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68045617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352473 + ... + 352665.

It is an arithmetic number, because the mean of its divisors is an integer number (3308864).

Almost surely, 2^68045817 is an apocalyptic number.

It is an amenable number.

68045817 is a deficient number, since it is larger than the sum of its proper divisors (37837831).

68045817 is a wasteful number, since it uses less digits than its factorization.

68045817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 68045817 is about 8248.9888471254. The cubic root of 68045817 is about 408.2571607832.

It can be divided in two parts, 6804 and 5817, that added together give a palindrome (12621).

The spelling of 68045817 in words is "sixty-eight million, forty-five thousand, eight hundred seventeen".