8500997 has 4 divisors (see below), whose sum is σ = 8507136. Its totient is φ = 8494860.

The previous prime is 8500967. The next prime is 8501011. The reversal of 8500997 is 7990058.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7990058 = 2 ⋅3995029.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8500997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8500997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8500907) 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, 98 + ... + 4124.

It is an arithmetic number, because the mean of its divisors is an integer number (2126784).

Almost surely, 2^8500997 is an apocalyptic number.

It is an amenable number.

8500997 is a deficient number, since it is larger than the sum of its proper divisors (6139).

8500997 is a wasteful number, since it uses less digits than its factorization.

8500997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 8500997 is about 2915.6469264985. The cubic root of 8500997 is about 204.0907340195.

The spelling of 8500997 in words is "eight million, five hundred thousand, nine hundred ninety-seven".