9997659 has 24 divisors (see below), whose sum is σ = 16954080. Its totient is φ = 5557248.

The previous prime is 9997643. The next prime is 9997661. The reversal of 9997659 is 9567999.

9997659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9997659 - 2⁴ = 9997643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9997859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187 + ... + 4475.

It is an arithmetic number, because the mean of its divisors is an integer number (706420).

Almost surely, 2^9997659 is an apocalyptic number.

9997659 is a deficient number, since it is larger than the sum of its proper divisors (6956421).

9997659 is a wasteful number, since it uses less digits than its factorization.

9997659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339 (or 4336 counting only the distinct ones).

The product of its digits is 1377810, while the sum is 54.

The square root of 9997659 is about 3161.9074939030. The cubic root of 9997659 is about 215.4266559191.

The spelling of 9997659 in words is "nine million, nine hundred ninety-seven thousand, six hundred fifty-nine".