3581641 has 8 divisors (see below), whose sum is σ = 4120640. Its totient is φ = 3049488.

The previous prime is 3581639. The next prime is 3581651. The reversal of 3581641 is 1461853.

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 3581641 - 2¹ = 3581639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3581621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531 + ... + 2728.

It is an arithmetic number, because the mean of its divisors is an integer number (515080).

Almost surely, 2^3581641 is an apocalyptic number.

It is an amenable number.

3581641 is a deficient number, since it is larger than the sum of its proper divisors (538999).

3581641 is a wasteful number, since it uses less digits than its factorization.

3581641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3423.

The product of its digits is 2880, while the sum is 28.

The square root of 3581641 is about 1892.5223908847. The cubic root of 3581641 is about 153.0009113250. Note that the first 3 decimals are identical.

The spelling of 3581641 in words is "three million, five hundred eighty-one thousand, six hundred forty-one".