9967545 has 24 divisors (see below), whose sum is σ = 19745856. Its totient is φ = 4556448.

The previous prime is 9967537. The next prime is 9967549. The reversal of 9967545 is 5457699.

It is a happy number.

9967545 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 9967545 - 2³ = 9967537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 9967545.

It is not an unprimeable number, because it can be changed into a prime (9967549) 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, 15507 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (822744).

Almost surely, 2^9967545 is an apocalyptic number.

It is an amenable number.

9967545 is a deficient number, since it is larger than the sum of its proper divisors (9778311).

9967545 is a wasteful number, since it uses less digits than its factorization.

9967545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31661 (or 31658 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 9967545 is about 3157.1419036844. The cubic root of 9967545 is about 215.2101424742.

The spelling of 9967545 in words is "nine million, nine hundred sixty-seven thousand, five hundred forty-five".