108666646 has 16 divisors (see below), whose sum is σ = 182156688. Its totient is φ = 48188800.

The previous prime is 108666637. The next prime is 108666653. The reversal of 108666646 is 646666801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59335 + ... + 61138.

It is an arithmetic number, because the mean of its divisors is an integer number (11384793).

Almost surely, 2^108666646 is an apocalyptic number.

108666646 is a deficient number, since it is larger than the sum of its proper divisors (73490042).

108666646 is a wasteful number, since it uses less digits than its factorization.

108666646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120527.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 108666646 is about 10424.3295228039. The cubic root of 108666646 is about 477.1981532090.

The spelling of 108666646 in words is "one hundred eight million, six hundred sixty-six thousand, six hundred forty-six".