201629 has 2 divisors, whose sum is σ = 201630. Its totient is φ = 201628.

The previous prime is 201623. The next prime is 201653. The reversal of 201629 is 926102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139129 + 62500 = 373^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 201629 - 2¹⁶ = 136093 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 201629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100814 + 100815.

It is an arithmetic number, because the mean of its divisors is an integer number (100815).

2²⁰¹⁶²⁹ is an apocalyptic number.

It is an amenable number.

201629 is a deficient number, since it is larger than the sum of its proper divisors (1).

201629 is an equidigital number, since it uses as much as digits as its factorization.

201629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 201629 is about 449.0311793183. The cubic root of 201629 is about 58.6386997957.

The spelling of 201629 in words is "two hundred one thousand, six hundred twenty-nine".