8197407 has 18 divisors (see below), whose sum is σ = 12417912. Its totient is φ = 5201064.

The previous prime is 8197403. The next prime is 8197429. The reversal of 8197407 is 7047918.

It is not a de Polignac number, because 8197407 - 2² = 8197403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8197403) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41094 + ... + 41292.

It is an arithmetic number, because the mean of its divisors is an integer number (689884).

Almost surely, 2^8197407 is an apocalyptic number.

8197407 is a deficient number, since it is larger than the sum of its proper divisors (4220505).

8197407 is a wasteful number, since it uses less digits than its factorization.

8197407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 8197407 is about 2863.1114194177. Note that the first 3 decimals coincide. The cubic root of 8197407 is about 201.6317097466.

The spelling of 8197407 in words is "eight million, one hundred ninety-seven thousand, four hundred seven".