681546107 has 16 divisors (see below), whose sum is σ = 771807744. Its totient is φ = 596436000.

The previous prime is 681546101. The next prime is 681546109. The reversal of 681546107 is 701645186.

It is a cyclic number.

It is not a de Polignac number, because 681546107 - 2⁴ = 681546091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681546101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20732 + ... + 42342.

It is an arithmetic number, because the mean of its divisors is an integer number (48237984).

Almost surely, 2^681546107 is an apocalyptic number.

681546107 is a deficient number, since it is larger than the sum of its proper divisors (90261637).

681546107 is a wasteful number, since it uses less digits than its factorization.

681546107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21730.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 681546107 is about 26106.4380373884. The cubic root of 681546107 is about 880.0318975180.

The spelling of 681546107 in words is "six hundred eighty-one million, five hundred forty-six thousand, one hundred seven".