9997755 has 16 divisors (see below), whose sum is σ = 16692480. Its totient is φ = 5100128.

The previous prime is 9997753. The next prime is 9997777. The reversal of 9997755 is 5577999.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9997755 - 2¹ = 9997753 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9997698 and 9997707.

It is not an unprimeable number, because it can be changed into a prime (9997753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14145 + ... + 14834.

It is an arithmetic number, because the mean of its divisors is an integer number (1043280).

Almost surely, 2^9997755 is an apocalyptic number.

9997755 is a deficient number, since it is larger than the sum of its proper divisors (6694725).

9997755 is a wasteful number, since it uses less digits than its factorization.

9997755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29010.

The product of its digits is 893025, while the sum is 51.

The square root of 9997755 is about 3161.9226745763. The cubic root of 9997755 is about 215.4273454436.

The spelling of 9997755 in words is "nine million, nine hundred ninety-seven thousand, seven hundred fifty-five".