86947018 has 8 divisors (see below), whose sum is σ = 130838148. Its totient is φ = 43334304.

The previous prime is 86947009. The next prime is 86947073. The reversal of 86947018 is 81074968.

It can be written as a sum of positive squares in 2 ways, for example, as 74080449 + 12866569 = 8607^2 + 3587^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68821 + ... + 70072.

Almost surely, 2^86947018 is an apocalyptic number.

86947018 is a deficient number, since it is larger than the sum of its proper divisors (43891130).

86947018 is a wasteful number, since it uses less digits than its factorization.

86947018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139208.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86947018 is about 9324.5384872389. The cubic root of 86947018 is about 443.0147953350.

The spelling of 86947018 in words is "eighty-six million, nine hundred forty-seven thousand, eighteen".