86811647 has 8 divisors (see below), whose sum is σ = 93745344. Its totient is φ = 79914528.

The previous prime is 86811643. The next prime is 86811649. The reversal of 86811647 is 74611868.

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

It is a cyclic number.

It is not a de Polignac number, because 86811647 - 2² = 86811643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86811643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4103 + ... + 13800.

It is an arithmetic number, because the mean of its divisors is an integer number (11718168).

Almost surely, 2^86811647 is an apocalyptic number.

86811647 is a deficient number, since it is larger than the sum of its proper divisors (6933697).

86811647 is a wasteful number, since it uses less digits than its factorization.

86811647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18289.

The product of its digits is 64512, while the sum is 41.

The square root of 86811647 is about 9317.2768017270. The cubic root of 86811647 is about 442.7847605849.

The spelling of 86811647 in words is "eighty-six million, eight hundred eleven thousand, six hundred forty-seven".