6656266 has 4 divisors (see below), whose sum is σ = 9984402. Its totient is φ = 3328132.

The previous prime is 6656261. The next prime is 6656291. The reversal of 6656266 is 6626566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6610041 + 46225 = 2571^2 + 215^2 .

It is not an unprimeable number, because it can be changed into a prime (6656261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664065 + ... + 1664068.

Almost surely, 2^6656266 is an apocalyptic number.

6656266 is a deficient number, since it is larger than the sum of its proper divisors (3328136).

6656266 is a wasteful number, since it uses less digits than its factorization.

6656266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328135.

The product of its digits is 77760, while the sum is 37.

The square root of 6656266 is about 2579.9740308771. The cubic root of 6656266 is about 188.1092808137.

The spelling of 6656266 in words is "six million, six hundred fifty-six thousand, two hundred sixty-six".