6442600266 has 24 divisors (see below), whose sum is σ = 13965294564. Its totient is φ = 2146560000.

The previous prime is 6442600261. The next prime is 6442600267. The reversal of 6442600266 is 6620062446.

6442600266 is a `hidden beast` number, since 6 + 4 + 42 + 600 + 2 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4692935025 + 1749665241 = 68505^2 + 41829^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6442600266.

It is not an unprimeable number, because it can be changed into a prime (6442600261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39735 + ... + 120266.

Almost surely, 2^6442600266 is an apocalyptic number.

6442600266 is an abundant number, since it is smaller than the sum of its proper divisors (7522694298).

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

6442600266 is a wasteful number, since it uses less digits than its factorization.

6442600266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162246 (or 162243 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 6442600266 is about 80265.8100687958. The cubic root of 6442600266 is about 1860.7458628519.

The spelling of 6442600266 in words is "six billion, four hundred forty-two million, six hundred thousand, two hundred sixty-six".