200109697 has 2 divisors, whose sum is σ = 200109698. Its totient is φ = 200109696.

The previous prime is 200109673. The next prime is 200109713. The reversal of 200109697 is 796901002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199261456 + 848241 = 14116^2 + 921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200109697 is a prime.

It is not a weakly prime, because it can be changed into another prime (200109617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100054848 + 100054849.

It is an arithmetic number, because the mean of its divisors is an integer number (100054849).

Almost surely, 2^200109697 is an apocalyptic number.

It is an amenable number.

200109697 is a deficient number, since it is larger than the sum of its proper divisors (1).

200109697 is an equidigital number, since it uses as much as digits as its factorization.

200109697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 200109697 is about 14146.0134666980. The cubic root of 200109697 is about 584.9104467587.

The spelling of 200109697 in words is "two hundred million, one hundred nine thousand, six hundred ninety-seven".