206406884 has 6 divisors (see below), whose sum is σ = 361212054. Its totient is φ = 103203440.

The previous prime is 206406821. The next prime is 206406887. The reversal of 206406884 is 488604602.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 195384484 + 11022400 = 13978^2 + 3320^2 .

It is not an unprimeable number, because it can be changed into a prime (206406887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25800857 + ... + 25800864.

It is an arithmetic number, because the mean of its divisors is an integer number (60202009).

Almost surely, 2^206406884 is an apocalyptic number.

It is an amenable number.

206406884 is a deficient number, since it is larger than the sum of its proper divisors (154805170).

206406884 is a wasteful number, since it uses less digits than its factorization.

206406884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51601725 (or 51601723 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 206406884 is about 14366.8675778682. The cubic root of 206406884 is about 590.9826428824.

The spelling of 206406884 in words is "two hundred six million, four hundred six thousand, eight hundred eighty-four".