86533621 has 8 divisors (see below), whose sum is σ = 91748160. Its totient is φ = 81332928.

The previous prime is 86533607. The next prime is 86533631. The reversal of 86533621 is 12633568.

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 86533621 - 2¹³ = 86525429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86533631) 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, 11230 + ... + 17296.

It is an arithmetic number, because the mean of its divisors is an integer number (11468520).

Almost surely, 2^86533621 is an apocalyptic number.

It is an amenable number.

86533621 is a deficient number, since it is larger than the sum of its proper divisors (5214539).

86533621 is a wasteful number, since it uses less digits than its factorization.

86533621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6923.

The product of its digits is 25920, while the sum is 34.

The square root of 86533621 is about 9302.3449194276. The cubic root of 86533621 is about 442.3115624397.

The spelling of 86533621 in words is "eighty-six million, five hundred thirty-three thousand, six hundred twenty-one".