3623581 has 8 divisors (see below), whose sum is σ = 4072320. Its totient is φ = 3199152.

The previous prime is 3623569. The next prime is 3623597. The reversal of 3623581 is 1853263.

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 3623581 - 2⁹ = 3623069 is a prime.

It is a super-2 number, since 2×3623581² = 26260678527122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3623381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5761 + ... + 6358.

It is an arithmetic number, because the mean of its divisors is an integer number (509040).

Almost surely, 2^3623581 is an apocalyptic number.

It is an amenable number.

3623581 is a deficient number, since it is larger than the sum of its proper divisors (448739).

3623581 is a wasteful number, since it uses less digits than its factorization.

3623581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155.

The product of its digits is 4320, while the sum is 28.

The square root of 3623581 is about 1903.5705923343. The cubic root of 3623581 is about 153.5957944496.

The spelling of 3623581 in words is "three million, six hundred twenty-three thousand, five hundred eighty-one".