74327861686 has 16 divisors (see below), whose sum is σ = 127130913504. Its totient is φ = 32287215744.

The previous prime is 74327861681. The next prime is 74327861693. The reversal of 74327861686 is 68616872347.

It is a self number, because there is not a number n which added to its sum of digits gives 74327861686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74327861681) 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 7 ways as a sum of consecutive naturals, for example, 84080850 + ... + 84081733.

It is an arithmetic number, because the mean of its divisors is an integer number (7945682094).

Almost surely, 2^74327861686 is an apocalyptic number.

74327861686 is a deficient number, since it is larger than the sum of its proper divisors (52803051818).

74327861686 is a wasteful number, since it uses less digits than its factorization.

74327861686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168162615.

The product of its digits is 16257024, while the sum is 58.

The spelling of 74327861686 in words is "seventy-four billion, three hundred twenty-seven million, eight hundred sixty-one thousand, six hundred eighty-six".