99676221 has 4 divisors (see below), whose sum is σ = 132901632. Its totient is φ = 66450812.

The previous prime is 99676217. The next prime is 99676229. The reversal of 99676221 is 12267699.

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.

It is a cyclic number.

It is not a de Polignac number, because 99676221 - 2² = 99676217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99676229) 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, 16612701 + ... + 16612706.

It is an arithmetic number, because the mean of its divisors is an integer number (33225408).

Almost surely, 2^99676221 is an apocalyptic number.

It is an amenable number.

99676221 is a deficient number, since it is larger than the sum of its proper divisors (33225411).

99676221 is a wasteful number, since it uses less digits than its factorization.

99676221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33225410.

The product of its digits is 81648, while the sum is 42.

The square root of 99676221 is about 9983.7979246377. The cubic root of 99676221 is about 463.6573920664.

The spelling of 99676221 in words is "ninety-nine million, six hundred seventy-six thousand, two hundred twenty-one".