74881706681 has 4 divisors (see below), whose sum is σ = 74895379200. Its totient is φ = 74868034164.

The previous prime is 74881706659. The next prime is 74881706701. The reversal of 74881706681 is 18660718847.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74881706681 - 2²² = 74877512377 is a prime.

It is a super-2 number, since 2×74881706681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74881706281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6828041 + ... + 6838998.

It is an arithmetic number, because the mean of its divisors is an integer number (18723844800).

Almost surely, 2^74881706681 is an apocalyptic number.

It is an amenable number.

74881706681 is a deficient number, since it is larger than the sum of its proper divisors (13672519).

74881706681 is a wasteful number, since it uses less digits than its factorization.

74881706681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13672518.

The product of its (nonzero) digits is 3612672, while the sum is 56.

The spelling of 74881706681 in words is "seventy-four billion, eight hundred eighty-one million, seven hundred six thousand, six hundred eighty-one".