667522 has 16 divisors (see below), whose sum is σ = 1098360. Its totient is φ = 302848.

The previous prime is 667519. The next prime is 667531. The reversal of 667522 is 225766.

It can be written as a sum of positive squares in 4 ways, for example, as 657721 + 9801 = 811^2 + 99^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648 + ... + 1324.

2⁶⁶⁷⁵²² is an apocalyptic number.

667522 is a deficient number, since it is larger than the sum of its proper divisors (430838).

667522 is a wasteful number, since it uses less digits than its factorization.

667522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its digits is 5040, while the sum is 28.

The square root of 667522 is about 817.0201955888. The cubic root of 667522 is about 87.3953906319.

It can be divided in two parts, 6 and 67522, that added together give a triangular number (67528 = T₃₆₇).

The spelling of 667522 in words is "six hundred sixty-seven thousand, five hundred twenty-two".