3731644 has 36 divisors (see below), whose sum is σ = 7724640. Its totient is φ = 1572480.

The previous prime is 3731627. The next prime is 3731683. The reversal of 3731644 is 4461373.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15364 + ... + 15604.

Almost surely, 2^3731644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3731644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3862320).

3731644 is an abundant number, since it is smaller than the sum of its proper divisors (3992996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3731644 is a wasteful number, since it uses less digits than its factorization.

3731644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 329 counting only the distinct ones).

The product of its digits is 6048, while the sum is 28.

The square root of 3731644 is about 1931.7463601622. The cubic root of 3731644 is about 155.1077156228.

The spelling of 3731644 in words is "three million, seven hundred thirty-one thousand, six hundred forty-four".