681844182 has 8 divisors (see below), whose sum is σ = 1363688376. Its totient is φ = 227281392.

The previous prime is 681844171. The next prime is 681844199. The reversal of 681844182 is 281448186.

It is a sphenic number, since it is the product of 3 distinct primes.

681844182 is an admirable number.

It is a super-2 number, since 2×681844182² = 929822977054498248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56820343 + ... + 56820354.

It is an arithmetic number, because the mean of its divisors is an integer number (170461047).

Almost surely, 2^681844182 is an apocalyptic number.

681844182 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

681844182 is a wasteful number, since it uses less digits than its factorization.

681844182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113640702.

The product of its digits is 98304, while the sum is 42.

The square root of 681844182 is about 26112.1462541860. The cubic root of 681844182 is about 880.1601731515.

The spelling of 681844182 in words is "six hundred eighty-one million, eight hundred forty-four thousand, one hundred eighty-two".