108688390 has 8 divisors (see below), whose sum is σ = 195639120. Its totient is φ = 43475352.

The previous prime is 108688373. The next prime is 108688451. The reversal of 108688390 is 93886801.

It is a happy number.

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

It is a super-2 number, since 2×108688390² = 23626332241584200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5434410 + ... + 5434429.

It is an arithmetic number, because the mean of its divisors is an integer number (24454890).

Almost surely, 2^108688390 is an apocalyptic number.

108688390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108688390 is a deficient number, since it is larger than the sum of its proper divisors (86950730).

108688390 is a wasteful number, since it uses less digits than its factorization.

108688390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10868846.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 108688390 is about 10425.3724154104. The cubic root of 108688390 is about 477.2299799163.

The spelling of 108688390 in words is "one hundred eight million, six hundred eighty-eight thousand, three hundred ninety".