86155647 has 8 divisors (see below), whose sum is σ = 117979056. Its totient is φ = 55884672.

The previous prime is 86155639. The next prime is 86155661. The reversal of 86155647 is 74655168.

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

It is not a de Polignac number, because 86155647 - 2³ = 86155639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86155599 and 86155608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86155627) 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, 387978 + ... + 388199.

It is an arithmetic number, because the mean of its divisors is an integer number (14747382).

Almost surely, 2^86155647 is an apocalyptic number.

86155647 is a deficient number, since it is larger than the sum of its proper divisors (31823409).

86155647 is a wasteful number, since it uses less digits than its factorization.

86155647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776217.

The product of its digits is 201600, while the sum is 42.

The square root of 86155647 is about 9282.0066257248. The cubic root of 86155647 is about 441.6666251493. Note that the first 4 decimals are identical.

The spelling of 86155647 in words is "eighty-six million, one hundred fifty-five thousand, six hundred forty-seven".