99653 has 4 divisors (see below), whose sum is σ = 100320. Its totient is φ = 98988.

The previous prime is 99643. The next prime is 99661. The reversal of 99653 is 35699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 35699 = 29 ⋅1231.

It is a cyclic number.

It is not a de Polignac number, because 99653 - 2⁸ = 99397 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 446.

It is an arithmetic number, because the mean of its divisors is an integer number (25080).

2⁹⁹⁶⁵³ is an apocalyptic number.

It is an amenable number.

99653 is a deficient number, since it is larger than the sum of its proper divisors (667).

99653 is a wasteful number, since it uses less digits than its factorization.

99653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666.

The product of its digits is 7290, while the sum is 32.

The square root of 99653 is about 315.6786340569. The cubic root of 99653 is about 46.3621384065.

The spelling of 99653 in words is "ninety-nine thousand, six hundred fifty-three".