74654045647 has 4 divisors (see below), whose sum is σ = 76062612600. Its totient is φ = 73245478696.

The previous prime is 74654045611. The next prime is 74654045657.

74654045647 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 74654045647 - 2¹¹ = 74654043599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74654045594 and 74654045603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74654045657) 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, 704283397 + ... + 704283502.

It is an arithmetic number, because the mean of its divisors is an integer number (19015653150).

Almost surely, 2^74654045647 is an apocalyptic number.

74654045647 is a deficient number, since it is larger than the sum of its proper divisors (1408566953).

74654045647 is a wasteful number, since it uses less digits than its factorization.

74654045647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408566952.

The product of its (nonzero) digits is 11289600, while the sum is 52.

The spelling of 74654045647 in words is "seventy-four billion, six hundred fifty-four million, forty-five thousand, six hundred forty-seven".