99656 has 8 divisors (see below), whose sum is σ = 186870. Its totient is φ = 49824.

The previous prime is 99643. The next prime is 99661. The reversal of 99656 is 65699.

It can be written as a sum of positive squares in only one way, i.e., 70756 + 28900 = 266^2 + 170^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

99656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221 + ... + 6236.

2⁹⁹⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

99656 is a deficient number, since it is larger than the sum of its proper divisors (87214).

99656 is a wasteful number, since it uses less digits than its factorization.

99656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12463 (or 12459 counting only the distinct ones).

The product of its digits is 14580, while the sum is 35.

The square root of 99656 is about 315.6833856889. The cubic root of 99656 is about 46.3626036376.

The spelling of 99656 in words is "ninety-nine thousand, six hundred fifty-six".