99681885 has 96 divisors (see below), whose sum is σ = 196335360. Its totient is φ = 46531584.

The previous prime is 99681871. The next prime is 99681929. The reversal of 99681885 is 58818699.

It is not a de Polignac number, because 99681885 - 2⁵ = 99681853 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 727537 + ... + 727673.

It is an arithmetic number, because the mean of its divisors is an integer number (2045160).

Almost surely, 2^99681885 is an apocalyptic number.

99681885 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

99681885 is a deficient number, since it is larger than the sum of its proper divisors (96653475).

99681885 is a wasteful number, since it uses less digits than its factorization.

99681885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 224 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 99681885 is about 9984.0815801955. The cubic root of 99681885 is about 463.6661741868. Note that the first 3 decimals are identical.

The spelling of 99681885 in words is "ninety-nine million, six hundred eighty-one thousand, eight hundred eighty-five".