8197905 has 16 divisors (see below), whose sum is σ = 13472064. Its totient is φ = 4253760.

The previous prime is 8197901. The next prime is 8197921. The reversal of 8197905 is 5097918.

It is a happy number.

It is not a de Polignac number, because 8197905 - 2² = 8197901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8197901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6831 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (842004).

Almost surely, 2^8197905 is an apocalyptic number.

It is an amenable number.

8197905 is a deficient number, since it is larger than the sum of its proper divisors (5274159).

8197905 is a wasteful number, since it uses less digits than its factorization.

8197905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14816.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 8197905 is about 2863.1983864203. The cubic root of 8197905 is about 201.6357927677.

The spelling of 8197905 in words is "eight million, one hundred ninety-seven thousand, nine hundred five".