4678974721 has 4 divisors (see below), whose sum is σ = 4694944212. Its totient is φ = 4663005232.

The previous prime is 4678974701. The next prime is 4678974733. The reversal of 4678974721 is 1274798764.

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 4574628496 + 104346225 = 67636^2 + 10215^2 .

It is a cyclic number.

It is not a de Polignac number, because 4678974721 - 2⁵ = 4678974689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4678974701) 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, 7984306 + ... + 7984891.

It is an arithmetic number, because the mean of its divisors is an integer number (1173736053).

Almost surely, 2^4678974721 is an apocalyptic number.

It is an amenable number.

4678974721 is a deficient number, since it is larger than the sum of its proper divisors (15969491).

4678974721 is a wasteful number, since it uses less digits than its factorization.

4678974721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15969490.

The product of its digits is 4741632, while the sum is 55.

The square root of 4678974721 is about 68403.0315190782. The cubic root of 4678974721 is about 1672.5671634619.

The spelling of 4678974721 in words is "four billion, six hundred seventy-eight million, nine hundred seventy-four thousand, seven hundred twenty-one".