97805105 has 4 divisors (see below), whose sum is σ = 117366132. Its totient is φ = 78244080.

The previous prime is 97805101. The next prime is 97805107. The reversal of 97805105 is 50150879.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16679056 + 81126049 = 4084^2 + 9007^2 .

It is not a de Polignac number, because 97805105 - 2² = 97805101 is a prime.

It is a super-2 number, since 2×97805105² = 19131677128122050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97805101) 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 3 ways as a sum of consecutive naturals, for example, 9780506 + ... + 9780515.

It is an arithmetic number, because the mean of its divisors is an integer number (29341533).

Almost surely, 2^97805105 is an apocalyptic number.

It is an amenable number.

97805105 is a deficient number, since it is larger than the sum of its proper divisors (19561027).

97805105 is a wasteful number, since it uses less digits than its factorization.

97805105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19561026.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 97805105 is about 9889.6463536367. The cubic root of 97805105 is about 460.7377967919.

The spelling of 97805105 in words is "ninety-seven million, eight hundred five thousand, one hundred five".