74354674673 has 4 divisors (see below), whose sum is σ = 75573603828. Its totient is φ = 73135745520.

The previous prime is 74354674601. The next prime is 74354674679. The reversal of 74354674673 is 37647645347.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9692796304 + 64661878369 = 98452^2 + 254287^2 .

It is a cyclic number.

It is not a de Polignac number, because 74354674673 - 2⁸ = 74354674417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74354674679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609464486 + ... + 609464607.

It is an arithmetic number, because the mean of its divisors is an integer number (18893400957).

Almost surely, 2^74354674673 is an apocalyptic number.

It is an amenable number.

74354674673 is a deficient number, since it is larger than the sum of its proper divisors (1218929155).

74354674673 is a wasteful number, since it uses less digits than its factorization.

74354674673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218929154.

The product of its digits is 35562240, while the sum is 56.

It can be divided in two parts, 74354674 and 673, that added together give a palindrome (74355347).

The spelling of 74354674673 in words is "seventy-four billion, three hundred fifty-four million, six hundred seventy-four thousand, six hundred seventy-three".