86947 has 4 divisors (see below), whose sum is σ = 99376. Its totient is φ = 74520.

The previous prime is 86939. The next prime is 86951. The reversal of 86947 is 74968.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86947 - 2³ = 86939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86927) 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, 6204 + ... + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (24844).

2⁸⁶⁹⁴⁷ is an apocalyptic number.

86947 is a deficient number, since it is larger than the sum of its proper divisors (12429).

86947 is a wasteful number, since it uses less digits than its factorization.

86947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12428.

The product of its digits is 12096, while the sum is 34.

The square root of 86947 is about 294.8677669736. The cubic root of 86947 is about 44.3014764764.

The spelling of 86947 in words is "eighty-six thousand, nine hundred forty-seven".