104640197 has 4 divisors (see below), whose sum is σ = 104723040. Its totient is φ = 104557356.

The previous prime is 104640191. The next prime is 104640209. The reversal of 104640197 is 791046401.

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: 791046401 = 433 ⋅1826897.

It is a cyclic number.

It is not a de Polignac number, because 104640197 - 2¹⁰ = 104639173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104640191) 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, 39497 + ... + 42062.

It is an arithmetic number, because the mean of its divisors is an integer number (26180760).

Almost surely, 2^104640197 is an apocalyptic number.

It is an amenable number.

104640197 is a deficient number, since it is larger than the sum of its proper divisors (82843).

104640197 is an equidigital number, since it uses as much as digits as its factorization.

104640197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82842.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 104640197 is about 10229.3791111680. The cubic root of 104640197 is about 471.2299113596.

Adding to 104640197 its reverse (791046401), we get a palindrome (895686598).

The spelling of 104640197 in words is "one hundred four million, six hundred forty thousand, one hundred ninety-seven".