99996681 has 16 divisors (see below), whose sum is σ = 139262400. Its totient is φ = 63759168.

The previous prime is 99996679. The next prime is 99996691. The reversal of 99996681 is 18669999.

It is not a de Polignac number, because 99996681 - 2¹ = 99996679 is a prime.

It is a super-2 number, since 2×99996681² = 19998672422031522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99996671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (8703900).

Almost surely, 2^99996681 is an apocalyptic number.

It is an amenable number.

99996681 is a deficient number, since it is larger than the sum of its proper divisors (39265719).

99996681 is a wasteful number, since it uses less digits than its factorization.

99996681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15368.

The product of its digits is 1889568, while the sum is 57.

The square root of 99996681 is about 9999.8340486230. The cubic root of 99996681 is about 464.1537481600.

The spelling of 99996681 in words is "ninety-nine million, nine hundred ninety-six thousand, six hundred eighty-one".