205570700 has 18 divisors (see below), whose sum is σ = 446088636. Its totient is φ = 82228240.

The previous prime is 205570699. The next prime is 205570721. The reversal of 205570700 is 7075502.

It is a self number, because there is not a number n which added to its sum of digits gives 205570700.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027754 + ... + 1027953.

It is an arithmetic number, because the mean of its divisors is an integer number (24782702).

Almost surely, 2^205570700 is an apocalyptic number.

205570700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205570700 is an abundant number, since it is smaller than the sum of its proper divisors (240517936).

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

205570700 is a wasteful number, since it uses less digits than its factorization.

205570700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055721 (or 2055714 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 26.

The square root of 205570700 is about 14337.7369204488. The cubic root of 205570700 is about 590.1835108560.

The spelling of 205570700 in words is "two hundred five million, five hundred seventy thousand, seven hundred".