3861724 has 12 divisors (see below), whose sum is σ = 6789384. Its totient is φ = 1921904.

The previous prime is 3861721. The next prime is 3861743. The reversal of 3861724 is 4271683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219 + ... + 3034.

It is an arithmetic number, because the mean of its divisors is an integer number (565782).

Almost surely, 2^3861724 is an apocalyptic number.

It is an amenable number.

3861724 is a deficient number, since it is larger than the sum of its proper divisors (2927660).

3861724 is a wasteful number, since it uses less digits than its factorization.

3861724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484 (or 4482 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 3861724 is about 1965.1269679082. The cubic root of 3861724 is about 156.8894511642.

The spelling of 3861724 in words is "three million, eight hundred sixty-one thousand, seven hundred twenty-four".