201689701 has 8 divisors (see below), whose sum is σ = 212194584. Its totient is φ = 191450880.

The previous prime is 201689699. The next prime is 201689743. The reversal of 201689701 is 107986102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33339076 + 168350625 = 5774^2 + 12975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201689701 - 2¹ = 201689699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201689401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64960 + ... + 67993.

It is an arithmetic number, because the mean of its divisors is an integer number (26524323).

Almost surely, 2^201689701 is an apocalyptic number.

It is an amenable number.

201689701 is a deficient number, since it is larger than the sum of its proper divisors (10504883).

201689701 is a wasteful number, since it uses less digits than its factorization.

201689701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133031.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 201689701 is about 14201.7499273857. The cubic root of 201689701 is about 586.4458365593.

The spelling of 201689701 in words is "two hundred one million, six hundred eighty-nine thousand, seven hundred one".