9975605 has 4 divisors (see below), whose sum is σ = 11970732. Its totient is φ = 7980480.

The previous prime is 9975599. The next prime is 9975619. The reversal of 9975605 is 5065799.

9975605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4104676 + 5870929 = 2026^2 + 2423^2 .

It is not a de Polignac number, because 9975605 - 2¹² = 9971509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997556 + ... + 997565.

It is an arithmetic number, because the mean of its divisors is an integer number (2992683).

Almost surely, 2^9975605 is an apocalyptic number.

It is an amenable number.

9975605 is a deficient number, since it is larger than the sum of its proper divisors (1995127).

9975605 is a wasteful number, since it uses less digits than its factorization.

9975605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995126.

The product of its (nonzero) digits is 85050, while the sum is 41.

The square root of 9975605 is about 3158.4181167160. The cubic root of 9975605 is about 215.2681349024.

The spelling of 9975605 in words is "nine million, nine hundred seventy-five thousand, six hundred five".