681206695 has 8 divisors (see below), whose sum is σ = 880328736. Its totient is φ = 503044896.

The previous prime is 681206633. The next prime is 681206699. The reversal of 681206695 is 596602186.

681206695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 681206695 - 2¹¹ = 681204647 is a prime.

It is a super-2 number, since 2×681206695² = 928085122625646050, 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 (681206699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5239987 + ... + 5240116.

It is an arithmetic number, because the mean of its divisors is an integer number (110041092).

Almost surely, 2^681206695 is an apocalyptic number.

681206695 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

681206695 is a deficient number, since it is larger than the sum of its proper divisors (199122041).

681206695 is a wasteful number, since it uses less digits than its factorization.

681206695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480121.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 681206695 is about 26099.9366857470. The cubic root of 681206695 is about 879.8857870884.

The spelling of 681206695 in words is "six hundred eighty-one million, two hundred six thousand, six hundred ninety-five".