206979773 has 48 divisors (see below), whose sum is σ = 286513920. Its totient is φ = 146966400.

The previous prime is 206979733. The next prime is 206979779. The reversal of 206979773 is 377979602.

206979773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 206979773 - 2²⁰ = 205931197 is a prime.

It is a super-2 number, since 2×206979773² = 85681252862263058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206979779) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 763628 + ... + 763898.

It is an arithmetic number, because the mean of its divisors is an integer number (5969040).

Almost surely, 2^206979773 is an apocalyptic number.

It is an amenable number.

206979773 is a deficient number, since it is larger than the sum of its proper divisors (79534147).

206979773 is a wasteful number, since it uses less digits than its factorization.

206979773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 1000188, while the sum is 50.

The square root of 206979773 is about 14386.7916159233. The cubic root of 206979773 is about 591.5289016374.

It can be divided in two parts, 206 and 979773, that added together give a palindrome (979979).

The spelling of 206979773 in words is "two hundred six million, nine hundred seventy-nine thousand, seven hundred seventy-three".