108681569 has 4 divisors (see below), whose sum is σ = 109082880. Its totient is φ = 108280260.

The previous prime is 108681563. The next prime is 108681593. The reversal of 108681569 is 965186801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 965186801 = 73 ⋅13221737.

It is a cyclic number.

It is not a de Polignac number, because 108681569 - 2⁴ = 108681553 is a prime.

It is a super-2 number, since 2×108681569² = 23623366880603522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108681563) 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, 200249 + ... + 200790.

It is an arithmetic number, because the mean of its divisors is an integer number (27270720).

Almost surely, 2^108681569 is an apocalyptic number.

It is an amenable number.

108681569 is a deficient number, since it is larger than the sum of its proper divisors (401311).

108681569 is an equidigital number, since it uses as much as digits as its factorization.

108681569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401310.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 108681569 is about 10425.0452756811. The cubic root of 108681569 is about 477.2199964710.

The spelling of 108681569 in words is "one hundred eight million, six hundred eighty-one thousand, five hundred sixty-nine".