201689743 has 2 divisors, whose sum is σ = 201689744. Its totient is φ = 201689742.

The previous prime is 201689699. The next prime is 201689779. The reversal of 201689743 is 347986102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201689743 - 2¹³ = 201681551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201689696 and 201689705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201689443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100844871 + 100844872.

It is an arithmetic number, because the mean of its divisors is an integer number (100844872).

Almost surely, 2^201689743 is an apocalyptic number.

201689743 is a deficient number, since it is larger than the sum of its proper divisors (1).

201689743 is an equidigital number, since it uses as much as digits as its factorization.

201689743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 201689743 is about 14201.7514060766. The cubic root of 201689743 is about 586.4458772665.

The spelling of 201689743 in words is "two hundred one million, six hundred eighty-nine thousand, seven hundred forty-three".