4166860721 has 8 divisors (see below), whose sum is σ = 4398744000. Its totient is φ = 3936234960.

The previous prime is 4166860639. The next prime is 4166860723. The reversal of 4166860721 is 1270686614.

4166860721 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4166860721 - 2¹⁴ = 4166844337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4166860723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307565 + ... + 320826.

It is an arithmetic number, because the mean of its divisors is an integer number (549843000).

Almost surely, 2^4166860721 is an apocalyptic number.

It is an amenable number.

4166860721 is a deficient number, since it is larger than the sum of its proper divisors (231883279).

4166860721 is a wasteful number, since it uses less digits than its factorization.

4166860721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628759.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 4166860721 is about 64551.2255576918. The cubic root of 4166860721 is about 1609.1739549414.

The spelling of 4166860721 in words is "four billion, one hundred sixty-six million, eight hundred sixty thousand, seven hundred twenty-one".