86647087 has 4 divisors (see below), whose sum is σ = 91207480. Its totient is φ = 82086696.

The previous prime is 86647069. The next prime is 86647091. The reversal of 86647087 is 78074668.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86647087 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 (86647037) 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, 2280168 + ... + 2280205.

It is an arithmetic number, because the mean of its divisors is an integer number (22801870).

Almost surely, 2^86647087 is an apocalyptic number.

86647087 is a deficient number, since it is larger than the sum of its proper divisors (4560393).

86647087 is a wasteful number, since it uses less digits than its factorization.

86647087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560392.

The product of its (nonzero) digits is 451584, while the sum is 46.

The square root of 86647087 is about 9308.4417063223. The cubic root of 86647087 is about 442.5048029525.

It can be divided in two parts, 8664 and 7087, that added together give a palindrome (15751).

The spelling of 86647087 in words is "eighty-six million, six hundred forty-seven thousand, eighty-seven".