3713821 has 8 divisors (see below), whose sum is σ = 3830400. Its totient is φ = 3598560.

The previous prime is 3713807. The next prime is 3713849. The reversal of 3713821 is 1283173.

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 3713821 - 2⁵ = 3713789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3713851) 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, 9610 + ... + 9988.

It is an arithmetic number, because the mean of its divisors is an integer number (478800).

Almost surely, 2^3713821 is an apocalyptic number.

It is an amenable number.

3713821 is a deficient number, since it is larger than the sum of its proper divisors (116579).

3713821 is a wasteful number, since it uses less digits than its factorization.

3713821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its digits is 1008, while the sum is 25.

The square root of 3713821 is about 1927.1276553462. The cubic root of 3713821 is about 154.8603806898.

Adding to 3713821 its reverse (1283173), we get a palindrome (4996994).

The spelling of 3713821 in words is "three million, seven hundred thirteen thousand, eight hundred twenty-one".