681186006 has 12 divisors (see below), whose sum is σ = 1475903052. Its totient is φ = 227061996.

The previous prime is 681186001. The next prime is 681186019. The reversal of 681186006 is 600681186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681186001) 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, 18921816 + ... + 18921851.

It is an arithmetic number, because the mean of its divisors is an integer number (122991921).

Almost surely, 2^681186006 is an apocalyptic number.

681186006 is an abundant number, since it is smaller than the sum of its proper divisors (794717046).

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

681186006 is a wasteful number, since it uses less digits than its factorization.

681186006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37843675 (or 37843672 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 681186006 is about 26099.5403407800. The cubic root of 681186006 is about 879.8768792970.

The spelling of 681186006 in words is "six hundred eighty-one million, one hundred eighty-six thousand, six".