206790226560 has 160 divisors (see below), whose sum is σ = 738485421300. Its totient is φ = 55144046592.

The previous prime is 206790226523. The next prime is 206790226561. The reversal of 206790226560 is 65622097602.

206790226560 is a `hidden beast` number, since 2 + 0 + 67 + 9 + 0 + 2 + 26 + 560 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 205818283584 + 971942976 = 453672^2 + 31176^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×206790226560² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (206790226561) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1942665 + ... + 2046344.

Almost surely, 2^206790226560 is an apocalyptic number.

206790226560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206790226560 is an abundant number, since it is smaller than the sum of its proper divisors (531695194740).

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

206790226560 is an equidigital number, since it uses as much as digits as its factorization.

206790226560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989040 (or 3989019 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 206790226560 in words is "two hundred six billion, seven hundred ninety million, two hundred twenty-six thousand, five hundred sixty".