681366119 has 6 divisors (see below), whose sum is σ = 792609624. Its totient is φ = 584028060.

The previous prime is 681366109. The next prime is 681366139. The reversal of 681366119 is 911663186.

681366119 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-681366119 is a prime.

It is a super-2 number, since 2×681366119² = 928519576242244322, 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 (681366109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6952667 + ... + 6952764.

It is an arithmetic number, because the mean of its divisors is an integer number (132101604).

Almost surely, 2^681366119 is an apocalyptic number.

681366119 is a deficient number, since it is larger than the sum of its proper divisors (111243505).

681366119 is a wasteful number, since it uses less digits than its factorization.

681366119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13905445 (or 13905438 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 681366119 is about 26102.9906141040. The cubic root of 681366119 is about 879.9544221401.

The spelling of 681366119 in words is "six hundred eighty-one million, three hundred sixty-six thousand, one hundred nineteen".