201065620 has 72 divisors (see below), whose sum is σ = 494121600. Its totient is φ = 68523840.

The previous prime is 201065587. The next prime is 201065633. The reversal of 201065620 is 26560102.

It is a junction number, because it is equal to n+sod(n) for n = 201065591 and 201065600.

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 23 ways as a sum of consecutive naturals, for example, 194505 + ... + 195535.

It is an arithmetic number, because the mean of its divisors is an integer number (6862800).

Almost surely, 2^201065620 is an apocalyptic number.

201065620 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 201065620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247060800).

201065620 is an abundant number, since it is smaller than the sum of its proper divisors (293055980).

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

201065620 is a wasteful number, since it uses less digits than its factorization.

201065620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 201065620 is about 14179.7609288732. The cubic root of 201065620 is about 585.8403390350.

The spelling of 201065620 in words is "two hundred one million, sixty-five thousand, six hundred twenty".