201686872 has 32 divisors (see below), whose sum is σ = 388987200. Its totient is φ = 97977600.

The previous prime is 201686857. The next prime is 201686887. The reversal of 201686872 is 278686102.

201686872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201686857) and next prime (201686887).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87754 + ... + 90022.

It is an arithmetic number, because the mean of its divisors is an integer number (12155850).

Almost surely, 2^201686872 is an apocalyptic number.

It is an amenable number.

201686872 is a deficient number, since it is larger than the sum of its proper divisors (187300328).

201686872 is a wasteful number, since it uses less digits than its factorization.

201686872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587 (or 2583 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 201686872 is about 14201.6503266346. The cubic root of 201686872 is about 586.4430946195.

It can be divided in two parts, 2016 and 86872, that added together give a palindrome (88888).

The spelling of 201686872 in words is "two hundred one million, six hundred eighty-six thousand, eight hundred seventy-two".