3723665321 has 8 divisors (see below), whose sum is σ = 3757442304. Its totient is φ = 3690029520.

The previous prime is 3723665317. The next prime is 3723665357. The reversal of 3723665321 is 1235663273.

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 3723665321 - 2² = 3723665317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3723665371) 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, 18056 + ... + 88166.

It is an arithmetic number, because the mean of its divisors is an integer number (469680288).

Almost surely, 2^3723665321 is an apocalyptic number.

It is an amenable number.

3723665321 is a deficient number, since it is larger than the sum of its proper divisors (33776983).

3723665321 is a wasteful number, since it uses less digits than its factorization.

3723665321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70591.

The product of its digits is 136080, while the sum is 38.

The square root of 3723665321 is about 61021.8429826566. The cubic root of 3723665321 is about 1549.9709076746.

The spelling of 3723665321 in words is "three billion, seven hundred twenty-three million, six hundred sixty-five thousand, three hundred twenty-one".