6667522 has 4 divisors (see below), whose sum is σ = 10001286. Its totient is φ = 3333760.

The previous prime is 6667487. The next prime is 6667523. The reversal of 6667522 is 2257666.

It is a happy number.

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., 3538161 + 3129361 = 1881^2 + 1769^2 .

It is a d-powerful number, because it can be written as 6⁴ + 6⁷ + 6⁸ + 7⁶ + 5⁸ + 2¹² + 2²² .

It is not an unprimeable number, because it can be changed into a prime (6667523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1666879 + ... + 1666882.

Almost surely, 2^6667522 is an apocalyptic number.

6667522 is a deficient number, since it is larger than the sum of its proper divisors (3333764).

6667522 is a wasteful number, since it uses less digits than its factorization.

6667522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333763.

The product of its digits is 30240, while the sum is 34.

The square root of 6667522 is about 2582.1545267470. The cubic root of 6667522 is about 188.2152544268.

The spelling of 6667522 in words is "six million, six hundred sixty-seven thousand, five hundred twenty-two".