99968861 has 4 divisors (see below), whose sum is σ = 105230400. Its totient is φ = 94707324.

The previous prime is 99968839. The next prime is 99968863. The reversal of 99968861 is 16886999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16886999 = 463 ⋅36473.

It is not a de Polignac number, because 99968861 - 2⁶ = 99968797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99968797 and 99968806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99968863) 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, 2630741 + ... + 2630778.

It is an arithmetic number, because the mean of its divisors is an integer number (26307600).

Almost surely, 2^99968861 is an apocalyptic number.

It is an amenable number.

99968861 is a deficient number, since it is larger than the sum of its proper divisors (5261539).

99968861 is a wasteful number, since it uses less digits than its factorization.

99968861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5261538.

The product of its digits is 1679616, while the sum is 56.

The square root of 99968861 is about 9998.4429287765. The cubic root of 99968861 is about 464.1107002148.

The spelling of 99968861 in words is "ninety-nine million, nine hundred sixty-eight thousand, eight hundred sixty-one".