99646223 has 2 divisors, whose sum is σ = 99646224. Its totient is φ = 99646222.

The previous prime is 99646207. The next prime is 99646237. The reversal of 99646223 is 32264699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99646223 - 2⁴ = 99646207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99646243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49823111 + 49823112.

It is an arithmetic number, because the mean of its divisors is an integer number (49823112).

Almost surely, 2^99646223 is an apocalyptic number.

99646223 is a deficient number, since it is larger than the sum of its proper divisors (1).

99646223 is an equidigital number, since it uses as much as digits as its factorization.

99646223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 99646223 is about 9982.2954774941. The cubic root of 99646223 is about 463.6108741512.

The spelling of 99646223 in words is "ninety-nine million, six hundred forty-six thousand, two hundred twenty-three".