3746221 has 4 divisors (see below), whose sum is σ = 3780700. Its totient is φ = 3711744.

The previous prime is 3746219. The next prime is 3746227. The reversal of 3746221 is 1226473.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3290596 + 455625 = 1814^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3746221 - 2¹ = 3746219 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 (3746227) 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, 17076 + ... + 17293.

It is an arithmetic number, because the mean of its divisors is an integer number (945175).

Almost surely, 2^3746221 is an apocalyptic number.

It is an amenable number.

3746221 is a deficient number, since it is larger than the sum of its proper divisors (34479).

3746221 is a wasteful number, since it uses less digits than its factorization.

3746221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34478.

The product of its digits is 2016, while the sum is 25.

The square root of 3746221 is about 1935.5156935556. The cubic root of 3746221 is about 155.3094200613.

The spelling of 3746221 in words is "three million, seven hundred forty-six thousand, two hundred twenty-one".