6520266 has 12 divisors (see below), whose sum is σ = 14127282. Its totient is φ = 2173416.

The previous prime is 6520253. The next prime is 6520277. The reversal of 6520266 is 6620256.

6520266 is a `hidden beast` number, since 652 + 0 + 2 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 1390041 = 2265^2 + 1179^2 .

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, 181101 + ... + 181136.

Almost surely, 2^6520266 is an apocalyptic number.

6520266 is an abundant number, since it is smaller than the sum of its proper divisors (7607016).

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

6520266 is a wasteful number, since it uses less digits than its factorization.

6520266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362245 (or 362242 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 6520266 is about 2553.4811532494. The cubic root of 6520266 is about 186.8193132063.

It can be divided in two parts, 6520 and 266, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6520266 in words is "six million, five hundred twenty thousand, two hundred sixty-six".