99680043 has 4 divisors (see below), whose sum is σ = 132906728. Its totient is φ = 66453360.

The previous prime is 99680011. The next prime is 99680051. The reversal of 99680043 is 34008699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34008699 = 3 ⋅11336233.

It is not a de Polignac number, because 99680043 - 2⁵ = 99680011 is a prime.

It is a super-2 number, since 2×99680043² = 19872221944963698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99679983 and 99680010.

It is not an unprimeable number, because it can be changed into a prime (99680443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16613338 + ... + 16613343.

It is an arithmetic number, because the mean of its divisors is an integer number (33226682).

Almost surely, 2^99680043 is an apocalyptic number.

99680043 is a deficient number, since it is larger than the sum of its proper divisors (33226685).

99680043 is a wasteful number, since it uses less digits than its factorization.

99680043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33226684.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 99680043 is about 9983.9893329270. The cubic root of 99680043 is about 463.6633181736.

The spelling of 99680043 in words is "ninety-nine million, six hundred eighty thousand, forty-three".