86218647 has 8 divisors (see below), whose sum is σ = 116906880. Its totient is φ = 56504760.

The previous prime is 86218631. The next prime is 86218709. The reversal of 86218647 is 74681268.

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

It is not a de Polignac number, because 86218647 - 2⁴ = 86218631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86218599 and 86218608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86218607) 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, 243379 + ... + 243732.

It is an arithmetic number, because the mean of its divisors is an integer number (14613360).

Almost surely, 2^86218647 is an apocalyptic number.

86218647 is a deficient number, since it is larger than the sum of its proper divisors (30688233).

86218647 is a wasteful number, since it uses less digits than its factorization.

86218647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487173.

The product of its digits is 129024, while the sum is 42.

The square root of 86218647 is about 9285.3996682965. The cubic root of 86218647 is about 441.7742529095.

The spelling of 86218647 in words is "eighty-six million, two hundred eighteen thousand, six hundred forty-seven".