99654 has 16 divisors (see below), whose sum is σ = 211248. Its totient is φ = 31232.

The previous prime is 99643. The next prime is 99661. The reversal of 99654 is 45699.

It is a happy number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 387 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (13203).

2⁹⁹⁶⁵⁴ is an apocalyptic number.

99654 is an abundant number, since it is smaller than the sum of its proper divisors (111594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105624).

99654 is a wasteful number, since it uses less digits than its factorization.

99654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its digits is 9720, while the sum is 33.

The square root of 99654 is about 315.6802179421. The cubic root of 99654 is about 46.3622934846.

It can be divided in two parts, 99 and 654, that multiplied together give a palindrome (64746).

The spelling of 99654 in words is "ninety-nine thousand, six hundred fifty-four".