206720926 has 4 divisors (see below), whose sum is σ = 310081392. Its totient is φ = 103360462.

The previous prime is 206720911. The next prime is 206720953. The reversal of 206720926 is 629027602.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 206720891 and 206720900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51680230 + ... + 51680233.

It is an arithmetic number, because the mean of its divisors is an integer number (77520348).

Almost surely, 2^206720926 is an apocalyptic number.

206720926 is a deficient number, since it is larger than the sum of its proper divisors (103360466).

206720926 is a wasteful number, since it uses less digits than its factorization.

206720926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103360465.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 206720926 is about 14377.7928069645. The cubic root of 206720926 is about 591.2822119053.

The spelling of 206720926 in words is "two hundred six million, seven hundred twenty thousand, nine hundred twenty-six".