681060243 has 8 divisors (see below), whose sum is σ = 916567488. Its totient is φ = 449796584.

The previous prime is 681060241. The next prime is 681060251. The reversal of 681060243 is 342060186.

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 681060243 - 2¹ = 681060241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 681060243.

It is not an unprimeable number, because it can be changed into a prime (681060241) 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 7 ways as a sum of consecutive naturals, for example, 1060521 + ... + 1061162.

It is an arithmetic number, because the mean of its divisors is an integer number (114570936).

Almost surely, 2^681060243 is an apocalyptic number.

681060243 is a deficient number, since it is larger than the sum of its proper divisors (235507245).

681060243 is a wasteful number, since it uses less digits than its factorization.

681060243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121793.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 681060243 is about 26097.1309342617. The cubic root of 681060243 is about 879.8227272908.

The spelling of 681060243 in words is "six hundred eighty-one million, sixty thousand, two hundred forty-three".