8404581 has 8 divisors (see below), whose sum is σ = 11417760. Its totient is φ = 5497232.

The previous prime is 8404553. The next prime is 8404597. The reversal of 8404581 is 1854048.

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 8404581 - 2¹⁰ = 8403557 is a prime.

It is a super-2 number, since 2×8404581² = 141273963571122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8404531) 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, 26271 + ... + 26588.

It is an arithmetic number, because the mean of its divisors is an integer number (1427220).

Almost surely, 2^8404581 is an apocalyptic number.

It is an amenable number.

8404581 is a deficient number, since it is larger than the sum of its proper divisors (3013179).

8404581 is a wasteful number, since it uses less digits than its factorization.

8404581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52915.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 8404581 is about 2899.0655391005. The cubic root of 8404581 is about 203.3162179150.

The spelling of 8404581 in words is "eight million, four hundred four thousand, five hundred eighty-one".