108645491 has 12 divisors (see below), whose sum is σ = 115532760. Its totient is φ = 102160388.

The previous prime is 108645469. The next prime is 108645497. The reversal of 108645491 is 194546801.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 108645491 - 2¹⁴ = 108629107 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (108645497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1841420 + ... + 1841478.

It is an arithmetic number, because the mean of its divisors is an integer number (9627730).

Almost surely, 2^108645491 is an apocalyptic number.

108645491 is a deficient number, since it is larger than the sum of its proper divisors (6887269).

108645491 is an frugal number, since it uses more digits than its factorization.

108645491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 108645491 is about 10423.3147798577. The cubic root of 108645491 is about 477.1671845463.

The spelling of 108645491 in words is "one hundred eight million, six hundred forty-five thousand, four hundred ninety-one".