86558961 has 4 divisors (see below), whose sum is σ = 115411952. Its totient is φ = 57705972.

The previous prime is 86558933. The next prime is 86559001. The reversal of 86558961 is 16985568.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86558961 - 2⁷ = 86558833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86558961.

It is not an unprimeable number, because it can be changed into a prime (86558561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14426491 + ... + 14426496.

It is an arithmetic number, because the mean of its divisors is an integer number (28852988).

Almost surely, 2^86558961 is an apocalyptic number.

It is an amenable number.

86558961 is a deficient number, since it is larger than the sum of its proper divisors (28852991).

86558961 is a wasteful number, since it uses less digits than its factorization.

86558961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28852990.

The product of its digits is 518400, while the sum is 48.

The square root of 86558961 is about 9303.7068418991. The cubic root of 86558961 is about 442.3547328706.

The spelling of 86558961 in words is "eighty-six million, five hundred fifty-eight thousand, nine hundred sixty-one".