3723681 has 8 divisors (see below), whose sum is σ = 5346880. Its totient is φ = 2291472.

The previous prime is 3723679. The next prime is 3723719. The reversal of 3723681 is 1863273.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3723681 - 2¹ = 3723679 is a prime.

It is a super-2 number, since 2×3723681² = 27731600379522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3723641) 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, 47701 + ... + 47778.

It is an arithmetic number, because the mean of its divisors is an integer number (668360).

Almost surely, 2^3723681 is an apocalyptic number.

It is an amenable number.

3723681 is a deficient number, since it is larger than the sum of its proper divisors (1623199).

3723681 is a wasteful number, since it uses less digits than its factorization.

3723681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95495.

The product of its digits is 6048, while the sum is 30.

The square root of 3723681 is about 1929.6841710498. The cubic root of 3723681 is about 154.9973083126.

The spelling of 3723681 in words is "three million, seven hundred twenty-three thousand, six hundred eighty-one".