74840784805 has 8 divisors (see below), whose sum is σ = 90194389272. Its totient is φ = 59615662848.

The previous prime is 74840784773. The next prime is 74840784833. The reversal of 74840784805 is 50848704847.

It can be written as a sum of positive squares in 4 ways, for example, as 5331044196 + 69509740609 = 73014^2 + 263647^2 .

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 74840784805 - 2⁵ = 74840784773 is a prime.

It is a super-2 number, since 2×74840784805² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32119344 + ... + 32121673.

It is an arithmetic number, because the mean of its divisors is an integer number (11274298659).

Almost surely, 2^74840784805 is an apocalyptic number.

It is an amenable number.

74840784805 is a deficient number, since it is larger than the sum of its proper divisors (15353604467).

74840784805 is a wasteful number, since it uses less digits than its factorization.

74840784805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64241255.

The product of its (nonzero) digits is 8028160, while the sum is 55.

The spelling of 74840784805 in words is "seventy-four billion, eight hundred forty million, seven hundred eighty-four thousand, eight hundred five".