99683821 has 8 divisors (see below), whose sum is σ = 101667104. Its totient is φ = 97711920.

The previous prime is 99683813. The next prime is 99683839. The reversal of 99683821 is 12838699.

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 99683821 - 2³ = 99683813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99683891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16066 + ... + 21388.

It is an arithmetic number, because the mean of its divisors is an integer number (12708388).

Almost surely, 2^99683821 is an apocalyptic number.

It is an amenable number.

99683821 is a deficient number, since it is larger than the sum of its proper divisors (1983283).

99683821 is a wasteful number, since it uses less digits than its factorization.

99683821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691.

The product of its digits is 186624, while the sum is 46.

The square root of 99683821 is about 9984.1785340608. The cubic root of 99683821 is about 463.6691759088.

The spelling of 99683821 in words is "ninety-nine million, six hundred eighty-three thousand, eight hundred twenty-one".