109599691 has 2 divisors, whose sum is σ = 109599692. Its totient is φ = 109599690.

The previous prime is 109599689. The next prime is 109599701. The reversal of 109599691 is 196995901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 109599691 - 2¹ = 109599689 is a prime.

Together with 109599689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (109599641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54799845 + 54799846.

It is an arithmetic number, because the mean of its divisors is an integer number (54799846).

Almost surely, 2^109599691 is an apocalyptic number.

109599691 is a deficient number, since it is larger than the sum of its proper divisors (1).

109599691 is an equidigital number, since it uses as much as digits as its factorization.

109599691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196830, while the sum is 49.

The square root of 109599691 is about 10468.9871047776. The cubic root of 109599691 is about 478.5600524001.

The spelling of 109599691 in words is "one hundred nine million, five hundred ninety-nine thousand, six hundred ninety-one".