99681033 has 16 divisors (see below), whose sum is σ = 137822400. Its totient is φ = 64008000.

The previous prime is 99681007. The next prime is 99681037. The reversal of 99681033 is 33018699.

It is not a de Polignac number, because 99681033 - 2¹² = 99676937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99680982 and 99681000.

It is not an unprimeable number, because it can be changed into a prime (99681037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43158 + ... + 45408.

It is an arithmetic number, because the mean of its divisors is an integer number (8613900).

Almost surely, 2^99681033 is an apocalyptic number.

It is an amenable number.

99681033 is a deficient number, since it is larger than the sum of its proper divisors (38141367).

99681033 is a wasteful number, since it uses less digits than its factorization.

99681033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 99681033 is about 9984.0389121838. The cubic root of 99681033 is about 463.6648531688.

The spelling of 99681033 in words is "ninety-nine million, six hundred eighty-one thousand, thirty-three".