108667986 has 48 divisors (see below), whose sum is σ = 255214080. Its totient is φ = 30754080.

The previous prime is 108667981. The next prime is 108667991. The reversal of 108667986 is 689766801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (108667981) and next prime (108667991).

It is not an unprimeable number, because it can be changed into a prime (108667981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30351 + ... + 33741.

It is an arithmetic number, because the mean of its divisors is an integer number (5316960).

Almost surely, 2^108667986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108667986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127607040).

108667986 is an abundant number, since it is smaller than the sum of its proper divisors (146546094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108667986 is a wasteful number, since it uses less digits than its factorization.

108667986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3512 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 108667986 is about 10424.3937953245. The cubic root of 108667986 is about 477.2001146906.

The spelling of 108667986 in words is "one hundred eight million, six hundred sixty-seven thousand, nine hundred eighty-six".