667548 has 48 divisors (see below), whose sum is σ = 1980160. Its totient is φ = 190512.

The previous prime is 667547. The next prime is 667549. The reversal of 667548 is 845766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (667547) and next prime (667549).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 667548.

It is not an unprimeable number, because it can be changed into a prime (667547) 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 15 ways as a sum of consecutive naturals, for example, 315 + ... + 1197.

2⁶⁶⁷⁵⁴⁸ 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 667548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990080).

667548 is an abundant number, since it is smaller than the sum of its proper divisors (1312612).

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

667548 is a wasteful number, since it uses less digits than its factorization.

667548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 895 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 667548 is about 817.0361069133. The cubic root of 667548 is about 87.3965253014.

It can be divided in two parts, 6675 and 48, that multiplied together give a triangular number (320400 = T₈₀₀).

The spelling of 667548 in words is "six hundred sixty-seven thousand, five hundred forty-eight".