99766 has 8 divisors (see below), whose sum is σ = 151704. Its totient is φ = 49200.

The previous prime is 99761. The next prime is 99767. The reversal of 99766 is 66799.

It is a sphenic number, since it is the product of 3 distinct primes.

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 (99761) by changing a digit.

99766 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 in 3 ways as a sum of consecutive naturals, for example, 135 + ... + 466.

It is an arithmetic number, because the mean of its divisors is an integer number (18963).

2⁹⁹⁷⁶⁶ is an apocalyptic number.

99766 is a deficient number, since it is larger than the sum of its proper divisors (51938).

99766 is a wasteful number, since it uses less digits than its factorization.

99766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686.

The product of its digits is 20412, while the sum is 37.

The square root of 99766 is about 315.8575628349. The cubic root of 99766 is about 46.3796556670.

The spelling of 99766 in words is "ninety-nine thousand, seven hundred sixty-six".