3743621 has 16 divisors (see below), whose sum is σ = 4581504. Its totient is φ = 2985984.

The previous prime is 3743599. The next prime is 3743647. The reversal of 3743621 is 1263473.

It is a cyclic number.

It is not a de Polignac number, because 3743621 - 2⁶ = 3743557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3743651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19301 + ... + 19493.

It is an arithmetic number, because the mean of its divisors is an integer number (286344).

Almost surely, 2^3743621 is an apocalyptic number.

It is an amenable number.

3743621 is a deficient number, since it is larger than the sum of its proper divisors (837883).

3743621 is a wasteful number, since it uses less digits than its factorization.

3743621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its digits is 3024, while the sum is 26.

The square root of 3743621 is about 1934.8439213539. The cubic root of 3743621 is about 155.2734818054.

The spelling of 3743621 in words is "three million, seven hundred forty-three thousand, six hundred twenty-one".