108666290 has 8 divisors (see below), whose sum is σ = 195599340. Its totient is φ = 43466512.

The previous prime is 108666223. The next prime is 108666293. The reversal of 108666290 is 92666801.

It can be written as a sum of positive squares in 2 ways, for example, as 99660289 + 9006001 = 9983^2 + 3001^2 .

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

It is not an unprimeable number, because it can be changed into a prime (108666293) 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, 5433305 + ... + 5433324.

Almost surely, 2^108666290 is an apocalyptic number.

108666290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

108666290 is a deficient number, since it is larger than the sum of its proper divisors (86933050).

108666290 is a wasteful number, since it uses less digits than its factorization.

108666290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866636.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 108666290 is about 10424.3124473511. The cubic root of 108666290 is about 477.1976320962.

It can be divided in two parts, 1086 and 66290, that added together give a palindrome (67376).

The spelling of 108666290 in words is "one hundred eight million, six hundred sixty-six thousand, two hundred ninety".