74668286647 has 16 divisors (see below), whose sum is σ = 75752651520. Its totient is φ = 73591022592.

The previous prime is 74668286611. The next prime is 74668286659.

74668286647 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74668286647 - 2⁷ = 74668286519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74668286687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32562433 + ... + 32564725.

It is an arithmetic number, because the mean of its divisors is an integer number (4734540720).

Almost surely, 2^74668286647 is an apocalyptic number.

74668286647 is a deficient number, since it is larger than the sum of its proper divisors (1084364873).

74668286647 is a wasteful number, since it uses less digits than its factorization.

74668286647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642.

The product of its digits is 130056192, while the sum is 64.

The spelling of 74668286647 in words is "seventy-four billion, six hundred sixty-eight million, two hundred eighty-six thousand, six hundred forty-seven".