9997285 has 8 divisors (see below), whose sum is σ = 12276000. Its totient is φ = 7811664.

The previous prime is 9997237. The next prime is 9997291. The reversal of 9997285 is 5827999.

9997285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9997285 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23035 + ... + 23464.

It is an arithmetic number, because the mean of its divisors is an integer number (1534500).

Almost surely, 2^9997285 is an apocalyptic number.

It is an amenable number.

9997285 is a deficient number, since it is larger than the sum of its proper divisors (2278715).

9997285 is a wasteful number, since it uses less digits than its factorization.

9997285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46547.

The product of its digits is 408240, while the sum is 49.

The square root of 9997285 is about 3161.8483518347. The cubic root of 9997285 is about 215.4239696044.

The spelling of 9997285 in words is "nine million, nine hundred ninety-seven thousand, two hundred eighty-five".