3721666667 has 8 divisors (see below), whose sum is σ = 3924096000. Its totient is φ = 3519892584.

The previous prime is 3721666633. The next prime is 3721666687. The reversal of 3721666667 is 7666661273.

3721666667 is digitally balanced in base 2, 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 3721666667 - 2²⁴ = 3704889451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3721666687) 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, 152123 + ... + 174884.

It is an arithmetic number, because the mean of its divisors is an integer number (490512000).

Almost surely, 2^3721666667 is an apocalyptic number.

3721666667 is a deficient number, since it is larger than the sum of its proper divisors (202429333).

3721666667 is a wasteful number, since it uses less digits than its factorization.

3721666667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327625.

The product of its digits is 2286144, while the sum is 50.

The square root of 3721666667 is about 61005.4642388696. The cubic root of 3721666667 is about 1549.6935456576.

The spelling of 3721666667 in words is "three billion, seven hundred twenty-one million, six hundred sixty-six thousand, six hundred sixty-seven".