104689691 has 2 divisors, whose sum is σ = 104689692. Its totient is φ = 104689690.

The previous prime is 104689679. The next prime is 104689693. The reversal of 104689691 is 196986401.

It is a strong prime.

It is an emirp because it is prime and its reverse (196986401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104689691 - 2¹⁴ = 104673307 is a prime.

Together with 104689693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (104689693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52344845 + 52344846.

It is an arithmetic number, because the mean of its divisors is an integer number (52344846).

Almost surely, 2^104689691 is an apocalyptic number.

104689691 is a deficient number, since it is larger than the sum of its proper divisors (1).

104689691 is an equidigital number, since it uses as much as digits as its factorization.

104689691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 104689691 is about 10231.7980335814. The cubic root of 104689691 is about 471.3041956775.

The spelling of 104689691 in words is "one hundred four million, six hundred eighty-nine thousand, six hundred ninety-one".