206001620 has 96 divisors (see below), whose sum is σ = 486936576. Its totient is φ = 72576000.

The previous prime is 206001581. The next prime is 206001637. The reversal of 206001620 is 26100602.

206001620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1621997 + ... + 1622123.

It is an arithmetic number, because the mean of its divisors is an integer number (5072256).

Almost surely, 2^206001620 is an apocalyptic number.

206001620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206001620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243468288).

206001620 is an abundant number, since it is smaller than the sum of its proper divisors (280934956).

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

206001620 is a wasteful number, since it uses less digits than its factorization.

206001620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 206001620 is about 14352.7565296705. The cubic root of 206001620 is about 590.5956065176.

The spelling of 206001620 in words is "two hundred six million, one thousand, six hundred twenty".