99653321 has 16 divisors (see below), whose sum is σ = 105737280. Its totient is φ = 93804480.

The previous prime is 99653311. The next prime is 99653327. The reversal of 99653321 is 12335699.

It is a cyclic number.

It is not a de Polignac number, because 99653321 - 2²² = 95459017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99653327) 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, 150890 + ... + 151548.

It is an arithmetic number, because the mean of its divisors is an integer number (6608580).

Almost surely, 2^99653321 is an apocalyptic number.

It is an amenable number.

99653321 is a deficient number, since it is larger than the sum of its proper divisors (6083959).

99653321 is a wasteful number, since it uses less digits than its factorization.

99653321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its digits is 43740, while the sum is 38.

The square root of 99653321 is about 9982.6510006110. The cubic root of 99653321 is about 463.6218818668.

The spelling of 99653321 in words is "ninety-nine million, six hundred fifty-three thousand, three hundred twenty-one".