86381678 has 4 divisors (see below), whose sum is σ = 129572520. Its totient is φ = 43190838.

The previous prime is 86381677. The next prime is 86381753. The reversal of 86381678 is 87618368.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86381677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21595418 + ... + 21595421.

It is an arithmetic number, because the mean of its divisors is an integer number (32393130).

Almost surely, 2^86381678 is an apocalyptic number.

86381678 is a deficient number, since it is larger than the sum of its proper divisors (43190842).

86381678 is a wasteful number, since it uses less digits than its factorization.

86381678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43190841.

The product of its digits is 387072, while the sum is 47.

The square root of 86381678 is about 9294.1744119637. The cubic root of 86381678 is about 442.0525281716.

The spelling of 86381678 in words is "eighty-six million, three hundred eighty-one thousand, six hundred seventy-eight".