86573861 has 16 divisors (see below), whose sum is σ = 99740160. Its totient is φ = 74317680.

The previous prime is 86573819. The next prime is 86573891. The reversal of 86573861 is 16837568.

It is a cyclic number.

It is not a de Polignac number, because 86573861 - 2⁶ = 86573797 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 (86573801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97160 + ... + 98046.

It is an arithmetic number, because the mean of its divisors is an integer number (6233760).

Almost surely, 2^86573861 is an apocalyptic number.

It is an amenable number.

86573861 is a deficient number, since it is larger than the sum of its proper divisors (13166299).

86573861 is a wasteful number, since it uses less digits than its factorization.

86573861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384.

The product of its digits is 241920, while the sum is 44.

The square root of 86573861 is about 9304.5075635414. The cubic root of 86573861 is about 442.3801132868.

The spelling of 86573861 in words is "eighty-six million, five hundred seventy-three thousand, eight hundred sixty-one".