681534668074 has 16 divisors (see below), whose sum is σ = 1101065656320. Its totient is φ = 314518736880.

The previous prime is 681534668033. The next prime is 681534668077. The reversal of 681534668074 is 470866435186.

It is not an unprimeable number, because it can be changed into a prime (681534668077) 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, 1254534 + ... + 1713745.

It is an arithmetic number, because the mean of its divisors is an integer number (68816603520).

Almost surely, 2^681534668074 is an apocalyptic number.

681534668074 is a deficient number, since it is larger than the sum of its proper divisors (419530988246).

681534668074 is a wasteful number, since it uses less digits than its factorization.

681534668074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977125.

The product of its (nonzero) digits is 23224320, while the sum is 58.

The spelling of 681534668074 in words is "six hundred eighty-one billion, five hundred thirty-four million, six hundred sixty-eight thousand, seventy-four".