206871401 has 24 divisors (see below), whose sum is σ = 237076224. Its totient is φ = 180180000.

The previous prime is 206871389. The next prime is 206871421. The reversal of 206871401 is 104178602.

206871401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-206871401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206871421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491171 + ... + 491591.

It is an arithmetic number, because the mean of its divisors is an integer number (9878176).

Almost surely, 2^206871401 is an apocalyptic number.

It is an amenable number.

206871401 is a deficient number, since it is larger than the sum of its proper divisors (30204823).

206871401 is a wasteful number, since it uses less digits than its factorization.

206871401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 206871401 is about 14383.0247514214. The cubic root of 206871401 is about 591.4256445885.

The spelling of 206871401 in words is "two hundred six million, eight hundred seventy-one thousand, four hundred one".