99687201 has 32 divisors (see below), whose sum is σ = 145525248. Its totient is φ = 60453120.

The previous prime is 99687199. The next prime is 99687241. The reversal of 99687201 is 10278699.

It is not a de Polignac number, because 99687201 - 2¹ = 99687199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99687241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287110 + ... + 287456.

It is an arithmetic number, because the mean of its divisors is an integer number (4547664).

Almost surely, 2^99687201 is an apocalyptic number.

It is an amenable number.

99687201 is a deficient number, since it is larger than the sum of its proper divisors (45838047).

99687201 is a wasteful number, since it uses less digits than its factorization.

99687201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 99687201 is about 9984.3478004324. The cubic root of 99687201 is about 463.6744164252.

The spelling of 99687201 in words is "ninety-nine million, six hundred eighty-seven thousand, two hundred one".