99610001 has 2 divisors, whose sum is σ = 99610002. Its totient is φ = 99610000.

The previous prime is 99609943. The next prime is 99610003. The reversal of 99610001 is 10001699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 33918976 = 8105^2 + 5824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99610001 is a prime.

Together with 99610003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99610003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49805000 + 49805001.

It is an arithmetic number, because the mean of its divisors is an integer number (49805001).

Almost surely, 2^99610001 is an apocalyptic number.

It is an amenable number.

99610001 is a deficient number, since it is larger than the sum of its proper divisors (1).

99610001 is an equidigital number, since it uses as much as digits as its factorization.

99610001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 99610001 is about 9980.4810004328. The cubic root of 99610001 is about 463.5546922316.

The spelling of 99610001 in words is "ninety-nine million, six hundred ten thousand, one".