8413581 has 16 divisors (see below), whose sum is σ = 12333888. Its totient is φ = 5059200.

The previous prime is 8413553. The next prime is 8413597. The reversal of 8413581 is 1853148.

It is not a de Polignac number, because 8413581 - 2⁵ = 8413549 is a prime.

It is a super-2 number, since 2×8413581² = 141576690487122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8413511) 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, 3591 + ... + 5451.

It is an arithmetic number, because the mean of its divisors is an integer number (770868).

Almost surely, 2^8413581 is an apocalyptic number.

It is an amenable number.

8413581 is a deficient number, since it is larger than the sum of its proper divisors (3920307).

8413581 is a wasteful number, since it uses less digits than its factorization.

8413581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012.

The product of its digits is 3840, while the sum is 30.

The square root of 8413581 is about 2900.6173480830. The cubic root of 8413581 is about 203.3887653820.

The spelling of 8413581 in words is "eight million, four hundred thirteen thousand, five hundred eighty-one".