205375689 has 16 divisors (see below), whose sum is σ = 310003200. Its totient is φ = 134332848.

The previous prime is 205375663. The next prime is 205375699. The reversal of 205375689 is 986573502.

It is a happy number.

205375689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205375689 - 2²³ = 196987081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205375609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70329 + ... + 73190.

It is an arithmetic number, because the mean of its divisors is an integer number (19375200).

Almost surely, 2^205375689 is an apocalyptic number.

It is an amenable number.

205375689 is a deficient number, since it is larger than the sum of its proper divisors (104627511).

205375689 is a wasteful number, since it uses less digits than its factorization.

205375689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143581 (or 143575 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The square root of 205375689 is about 14330.9346868932. The cubic root of 205375689 is about 589.9968294381.

The spelling of 205375689 in words is "two hundred five million, three hundred seventy-five thousand, six hundred eighty-nine".