89704581 has 8 divisors (see below), whose sum is σ = 119803680. Its totient is φ = 59704272.

The previous prime is 89704543. The next prime is 89704583. The reversal of 89704581 is 18540798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89704581 - 2¹¹ = 89702533 is a prime.

It is a super-2 number, since 2×89704581² = 16093823704771122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89704583) 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, 22551 + ... + 26228.

It is an arithmetic number, because the mean of its divisors is an integer number (14975460).

Almost surely, 2^89704581 is an apocalyptic number.

It is an amenable number.

89704581 is a deficient number, since it is larger than the sum of its proper divisors (30099099).

89704581 is a wasteful number, since it uses less digits than its factorization.

89704581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49395.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 89704581 is about 9471.2502342616. The cubic root of 89704581 is about 447.6496067723.

The spelling of 89704581 in words is "eighty-nine million, seven hundred four thousand, five hundred eighty-one".