108661578 has 16 divisors (see below), whose sum is σ = 217428960. Its totient is φ = 36202896.

The previous prime is 108661573. The next prime is 108661633. The reversal of 108661578 is 875166801.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108661571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16776 + ... + 22332.

It is an arithmetic number, because the mean of its divisors is an integer number (13589310).

Almost surely, 2^108661578 is an apocalyptic number.

108661578 is an abundant number, since it is smaller than the sum of its proper divisors (108767382).

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

108661578 is a wasteful number, since it uses less digits than its factorization.

108661578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8821.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 108661578 is about 10424.0864347913. The cubic root of 108661578 is about 477.1907345639.

The spelling of 108661578 in words is "one hundred eight million, six hundred sixty-one thousand, five hundred seventy-eight".