2061565200 has 90 divisors (see below), whose sum is σ = 7154216394. Its totient is φ = 549749760.

The previous prime is 2061565199. The next prime is 2061565241. The reversal of 2061565200 is 25651602.

2061565200 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 5 + 652 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 211877136 + 1849688064 = 14556^2 + 43008^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 282729 + ... + 289928.

Almost surely, 2^2061565200 is an apocalyptic number.

2061565200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061565200 is an abundant number, since it is smaller than the sum of its proper divisors (5092651194).

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

2061565200 is a wasteful number, since it uses less digits than its factorization.

2061565200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572681 (or 572667 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2061565200 is about 45404.4623357661. The cubic root of 2061565200 is about 1272.7185035265.

The spelling of 2061565200 in words is "two billion, sixty-one million, five hundred sixty-five thousand, two hundred".