9997506 has 28 divisors (see below), whose sum is σ = 22487382. Its totient is φ = 3332016.

The previous prime is 9997483. The next prime is 9997517. The reversal of 9997506 is 6057999.

It can be written as a sum of positive squares in only one way, i.e., 9979281 + 18225 = 3159^2 + 135^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1971 + ... + 4886.

Almost surely, 2^9997506 is an apocalyptic number.

9997506 is an abundant number, since it is smaller than the sum of its proper divisors (12489876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9997506 is an equidigital number, since it uses as much as digits as its factorization.

9997506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 9997506 is about 3161.8832995542. The cubic root of 9997506 is about 215.4255569803.

Adding to 9997506 its product of nonzero digits (153090), we get a square (10150596 = 3186²).

The spelling of 9997506 in words is "nine million, nine hundred ninety-seven thousand, five hundred six".