86678 has 8 divisors (see below), whose sum is σ = 136920. Its totient is φ = 41040.

The previous prime is 86677. The next prime is 86689. The reversal of 86678 is 87668.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86677) 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, 1103 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (17115).

2⁸⁶⁶⁷⁸ is an apocalyptic number.

86678 is a deficient number, since it is larger than the sum of its proper divisors (50242).

86678 is a wasteful number, since it uses less digits than its factorization.

86678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302.

The product of its digits is 16128, while the sum is 35.

The square root of 86678 is about 294.4112769579. The cubic root of 86678 is about 44.2557420703.

Subtracting 86678 from its reverse (87668), we obtain a triangular number (990 = T₄₄).

The spelling of 86678 in words is "eighty-six thousand, six hundred seventy-eight".