86345581 has 8 divisors (see below), whose sum is σ = 98737344. Its totient is φ = 73968000.

The previous prime is 86345569. The next prime is 86345663. The reversal of 86345581 is 18554368.

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 86345581 - 2⁷ = 86345453 is a prime.

It is a super-2 number, since 2×86345581² = 14911118716455122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86345521) 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, 19581 + ... + 23581.

It is an arithmetic number, because the mean of its divisors is an integer number (12342168).

Almost surely, 2^86345581 is an apocalyptic number.

It is an amenable number.

86345581 is a deficient number, since it is larger than the sum of its proper divisors (12391763).

86345581 is a wasteful number, since it uses less digits than its factorization.

86345581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091.

The product of its digits is 115200, while the sum is 40.

The square root of 86345581 is about 9292.2322936956. The cubic root of 86345581 is about 441.9909449221.

The spelling of 86345581 in words is "eighty-six million, three hundred forty-five thousand, five hundred eighty-one".