206611420 has 24 divisors (see below), whose sum is σ = 439998048. Its totient is φ = 81480000.

The previous prime is 206611417. The next prime is 206611463. The reversal of 206611420 is 24116602.

It is a junction number, because it is equal to n+sod(n) for n = 206611391 and 206611400.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71331 + ... + 74170.

It is an arithmetic number, because the mean of its divisors is an integer number (18333252).

Almost surely, 2^206611420 is an apocalyptic number.

206611420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206611420 is an abundant number, since it is smaller than the sum of its proper divisors (233386628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206611420 is a wasteful number, since it uses less digits than its factorization.

206611420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145581 (or 145579 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 206611420 is about 14373.9841380182. The cubic root of 206611420 is about 591.1777870854.

The spelling of 206611420 in words is "two hundred six million, six hundred eleven thousand, four hundred twenty".