667576 has 48 divisors (see below), whose sum is σ = 1580040. Its totient is φ = 262080.

The previous prime is 667561. The next prime is 667577. The reversal of 667576 is 675766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667577) 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 in 11 ways as a sum of consecutive naturals, for example, 5031 + ... + 5161.

2⁶⁶⁷⁵⁷⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790020).

667576 is an abundant number, since it is smaller than the sum of its proper divisors (912464).

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

667576 is a wasteful number, since it uses less digits than its factorization.

667576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 153 counting only the distinct ones).

The product of its digits is 52920, while the sum is 37.

The square root of 667576 is about 817.0532418392. The cubic root of 667576 is about 87.3977472203.

Subtracting from 667576 its product of digits (52920), we obtain a 4-th power (614656 = 28⁴).

The spelling of 667576 in words is "six hundred sixty-seven thousand, five hundred seventy-six".