99578213 has 8 divisors (see below), whose sum is σ = 114176832. Its totient is φ = 85072896.

The previous prime is 99578203. The next prime is 99578233. The reversal of 99578213 is 31287599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99578213 - 2²⁴ = 82800997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99578203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21020 + ... + 25317.

It is an arithmetic number, because the mean of its divisors is an integer number (14272104).

Almost surely, 2^99578213 is an apocalyptic number.

It is an amenable number.

99578213 is a deficient number, since it is larger than the sum of its proper divisors (14598619).

99578213 is a wasteful number, since it uses less digits than its factorization.

99578213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46651.

The product of its digits is 136080, while the sum is 44.

The square root of 99578213 is about 9978.8883649433. Note that the first 3 decimals coincide. The cubic root of 99578213 is about 463.5053764194.

The spelling of 99578213 in words is "ninety-nine million, five hundred seventy-eight thousand, two hundred thirteen".