68186856 has 64 divisors (see below), whose sum is σ = 180794880. Its totient is φ = 21392640.

The previous prime is 68186851. The next prime is 68186861. The reversal of 68186856 is 65868186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68186851) and next prime (68186861).

It is not an unprimeable number, because it can be changed into a prime (68186851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26290 + ... + 28766.

It is an arithmetic number, because the mean of its divisors is an integer number (2824920).

Almost surely, 2^68186856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68186856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90397440).

68186856 is an abundant number, since it is smaller than the sum of its proper divisors (112608024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68186856 is a wasteful number, since it uses less digits than its factorization.

68186856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2554 (or 2550 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 68186856 is about 8257.5332878530. The cubic root of 68186856 is about 408.5390318700.

The spelling of 68186856 in words is "sixty-eight million, one hundred eighty-six thousand, eight hundred fifty-six".