206819834 has 36 divisors (see below), whose sum is σ = 344467854. Its totient is φ = 93087072.

The previous prime is 206819797. The next prime is 206819849. The reversal of 206819834 is 438918602.

It can be written as a sum of positive squares in 3 ways, for example, as 67650625 + 139169209 = 8225^2 + 11797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 206819791 and 206819800.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 746504 + ... + 746780.

Almost surely, 2^206819834 is an apocalyptic number.

206819834 is a deficient number, since it is larger than the sum of its proper divisors (137648020).

206819834 is a wasteful number, since it uses less digits than its factorization.

206819834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 206819834 is about 14381.2320056385. The cubic root of 206819834 is about 591.3764987899.

The spelling of 206819834 in words is "two hundred six million, eight hundred nineteen thousand, eight hundred thirty-four".