201687029 has 2 divisors, whose sum is σ = 201687030. Its totient is φ = 201687028.

The previous prime is 201687019. The next prime is 201687041. The reversal of 201687029 is 920786102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176836804 + 24850225 = 13298^2 + 4985^2 .

It is a cyclic number.

It is not a de Polignac number, because 201687029 - 2⁸ = 201686773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201687029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201687019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100843514 + 100843515.

It is an arithmetic number, because the mean of its divisors is an integer number (100843515).

Almost surely, 2^201687029 is an apocalyptic number.

It is an amenable number.

201687029 is a deficient number, since it is larger than the sum of its proper divisors (1).

201687029 is an equidigital number, since it uses as much as digits as its factorization.

201687029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 201687029 is about 14201.6558541601. The cubic root of 201687029 is about 586.4432467886.

The spelling of 201687029 in words is "two hundred one million, six hundred eighty-seven thousand, twenty-nine".