3722641 has 8 divisors (see below), whose sum is σ = 4029480. Its totient is φ = 3418752.

The previous prime is 3722629. The next prime is 3722683. The reversal of 3722641 is 1462273.

3722641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 497025 + 3225616 = 705^2 + 1796^2 .

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 3722641 - 2⁹ = 3722129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3722611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2415 + ... + 3643.

It is an arithmetic number, because the mean of its divisors is an integer number (503685).

Almost surely, 2^3722641 is an apocalyptic number.

It is an amenable number.

3722641 is a deficient number, since it is larger than the sum of its proper divisors (306839).

3722641 is a wasteful number, since it uses less digits than its factorization.

3722641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

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

The square root of 3722641 is about 1929.4146780824. The cubic root of 3722641 is about 154.9828770540.

The spelling of 3722641 in words is "three million, seven hundred twenty-two thousand, six hundred forty-one".