68285861 has 6 divisors (see below), whose sum is σ = 79434630. Its totient is φ = 58530696.

The previous prime is 68285857. The next prime is 68285863. The reversal of 68285861 is 16858286.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 28153636 = 6335^2 + 5306^2 .

It is not a de Polignac number, because 68285861 - 2² = 68285857 is a prime.

It is a super-2 number, since 2×68285861² = 9325917625022642, 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 (68285863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696746 + ... + 696843.

It is an arithmetic number, because the mean of its divisors is an integer number (13239105).

Almost surely, 2^68285861 is an apocalyptic number.

It is an amenable number.

68285861 is a deficient number, since it is larger than the sum of its proper divisors (11148769).

68285861 is a wasteful number, since it uses less digits than its factorization.

68285861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393603 (or 1393596 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 68285861 is about 8263.5259423566. The cubic root of 68285861 is about 408.7366645171.

The spelling of 68285861 in words is "sixty-eight million, two hundred eighty-five thousand, eight hundred sixty-one".