206413620 has 48 divisors (see below), whose sum is σ = 660524928. Its totient is φ = 47180160.

The previous prime is 206413591. The next prime is 206413621. The reversal of 206413620 is 26314602.

206413620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206413621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245311 + ... + 246150.

It is an arithmetic number, because the mean of its divisors is an integer number (13760936).

Almost surely, 2^206413620 is an apocalyptic number.

206413620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206413620 is an abundant number, since it is smaller than the sum of its proper divisors (454111308).

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

206413620 is a wasteful number, since it uses less digits than its factorization.

206413620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491480 (or 491478 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 206413620 is about 14367.1020042318. The cubic root of 206413620 is about 590.9890716341.

The spelling of 206413620 in words is "two hundred six million, four hundred thirteen thousand, six hundred twenty".