9655 has 4 divisors (see below), whose sum is σ = 11592. Its totient is φ = 7720.

The previous prime is 9649. The next prime is 9661. The reversal of 9655 is 5569.

9655 = 18² + 19² + ... + 32².

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (9649) and next prime (9661).

It is not a de Polignac number, because 9655 - 2⁵ = 9623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a nialpdrome in base 10.

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, 961 + ... + 970.

It is an arithmetic number, because the mean of its divisors is an integer number (2898).

2⁹⁶⁵⁵ is an apocalyptic number.

9655 is a deficient number, since it is larger than the sum of its proper divisors (1937).

9655 is a wasteful number, since it uses less digits than its factorization.

9655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936.

The product of its digits is 1350, while the sum is 25.

The square root of 9655 is about 98.2598595562. The cubic root of 9655 is about 21.2936817720.

It can be divided in two parts, 96 and 55, that added together give a palindrome (151).

The spelling of 9655 in words is "nine thousand, six hundred fifty-five".