206825406 has 16 divisors (see below), whose sum is σ = 413833104. Its totient is φ = 68911424.

The previous prime is 206825401. The next prime is 206825447. The reversal of 206825406 is 604528602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206825401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10456 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (25864569).

Almost surely, 2^206825406 is an apocalyptic number.

206825406 is an abundant number, since it is smaller than the sum of its proper divisors (207007698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206825406 is a wasteful number, since it uses less digits than its factorization.

206825406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15195.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 206825406 is about 14381.4257290437. The cubic root of 206825406 is about 591.3818095640.

The spelling of 206825406 in words is "two hundred six million, eight hundred twenty-five thousand, four hundred six".