108891644 has 6 divisors (see below), whose sum is σ = 190560384. Its totient is φ = 54445820.

The previous prime is 108891631. The next prime is 108891667. The reversal of 108891644 is 446198801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13611452 + ... + 13611459.

It is an arithmetic number, because the mean of its divisors is an integer number (31760064).

Almost surely, 2^108891644 is an apocalyptic number.

It is an amenable number.

108891644 is a deficient number, since it is larger than the sum of its proper divisors (81668740).

108891644 is a wasteful number, since it uses less digits than its factorization.

108891644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27222915 (or 27222913 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 108891644 is about 10435.1159073582. The cubic root of 108891644 is about 477.5272778474.

The spelling of 108891644 in words is "one hundred eight million, eight hundred ninety-one thousand, six hundred forty-four".