206980877 has 4 divisors (see below), whose sum is σ = 207161856. Its totient is φ = 206799900.

The previous prime is 206980871. The next prime is 206980897. The reversal of 206980877 is 778089602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206980877 - 2²⁶ = 139872013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206980871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88763 + ... + 91064.

It is an arithmetic number, because the mean of its divisors is an integer number (51790464).

Almost surely, 2^206980877 is an apocalyptic number.

It is an amenable number.

206980877 is a deficient number, since it is larger than the sum of its proper divisors (180979).

206980877 is a wasteful number, since it uses less digits than its factorization.

206980877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180978.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 206980877 is about 14386.8299843989. The cubic root of 206980877 is about 591.5299533452.

The spelling of 206980877 in words is "two hundred six million, nine hundred eighty thousand, eight hundred seventy-seven".