206061839 has 4 divisors (see below), whose sum is σ = 206123760. Its totient is φ = 205999920.

The previous prime is 206061799. The next prime is 206061851. The reversal of 206061839 is 938160602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206061839 is a prime.

It is a super-2 number, since 2×206061839² = 84922962984123842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206061799 and 206061808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206061139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25667 + ... + 32724.

It is an arithmetic number, because the mean of its divisors is an integer number (51530940).

Almost surely, 2^206061839 is an apocalyptic number.

206061839 is a deficient number, since it is larger than the sum of its proper divisors (61921).

206061839 is an equidigital number, since it uses as much as digits as its factorization.

206061839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61920.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 206061839 is about 14354.8541964034. The cubic root of 206061839 is about 590.6531491264.

The spelling of 206061839 in words is "two hundred six million, sixty-one thousand, eight hundred thirty-nine".