68855886 has 64 divisors (see below), whose sum is σ = 175737600. Its totient is φ = 19764000.

The previous prime is 68855873. The next prime is 68855909.

68855886 is a `hidden beast` number, since 6 + 8 + 8 + 558 + 86 = 666.

68855886 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×68855886² = 9482266073689992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8236 + ... + 14336.

It is an arithmetic number, because the mean of its divisors is an integer number (2745900).

Almost surely, 2^68855886 is an apocalyptic number.

68855886 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68855886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87868800).

68855886 is an abundant number, since it is smaller than the sum of its proper divisors (106881714).

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

68855886 is a wasteful number, since it uses less digits than its factorization.

68855886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6142 (or 6136 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 54.

The square root of 68855886 is about 8297.9446852820. The cubic root of 68855886 is about 409.8708417281.

The spelling of 68855886 in words is "sixty-eight million, eight hundred fifty-five thousand, eight hundred eighty-six".