105909691 has 8 divisors (see below), whose sum is σ = 107827200. Its totient is φ = 104006760.

The previous prime is 105909689. The next prime is 105909697. The reversal of 105909691 is 196909501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105909691 - 2¹ = 105909689 is a prime.

It is a super-2 number, since 2×105909691² = 22433725295430962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105909697) 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, 11580 + ... + 18598.

It is an arithmetic number, because the mean of its divisors is an integer number (13478400).

Almost surely, 2^105909691 is an apocalyptic number.

105909691 is a deficient number, since it is larger than the sum of its proper divisors (1917509).

105909691 is an equidigital number, since it uses as much as digits as its factorization.

105909691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7289.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 105909691 is about 10291.2434136989. The cubic root of 105909691 is about 473.1279088869.

The spelling of 105909691 in words is "one hundred five million, nine hundred nine thousand, six hundred ninety-one".