99677843 has 16 divisors (see below), whose sum is σ = 106496160. Its totient is φ = 93250080.

The previous prime is 99677839. The next prime is 99677849. The reversal of 99677843 is 34877699.

It is not a de Polignac number, because 99677843 - 2² = 99677839 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99677849) 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, 1487696 + ... + 1487762.

It is an arithmetic number, because the mean of its divisors is an integer number (6656010).

Almost surely, 2^99677843 is an apocalyptic number.

99677843 is a deficient number, since it is larger than the sum of its proper divisors (6818317).

99677843 is an frugal number, since it uses more digits than its factorization.

99677843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 157 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 99677843 is about 9983.8791559193. The cubic root of 99677843 is about 463.6599070367.

The spelling of 99677843 in words is "ninety-nine million, six hundred seventy-seven thousand, eight hundred forty-three".