99646 has 4 divisors (see below), whose sum is σ = 149472. Its totient is φ = 49822.

The previous prime is 99643. The next prime is 99661. The reversal of 99646 is 64699.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24910 + ... + 24913.

It is an arithmetic number, because the mean of its divisors is an integer number (37368).

2⁹⁹⁶⁴⁶ is an apocalyptic number.

99646 is a deficient number, since it is larger than the sum of its proper divisors (49826).

99646 is a wasteful number, since it uses less digits than its factorization.

99646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49825.

The product of its digits is 11664, while the sum is 34.

The square root of 99646 is about 315.6675466373. The cubic root of 99646 is about 46.3610528310.

The spelling of 99646 in words is "ninety-nine thousand, six hundred forty-six".