667448 has 8 divisors (see below), whose sum is σ = 1251480. Its totient is φ = 333720.

The previous prime is 667441. The next prime is 667463. The reversal of 667448 is 844766.

667448 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41708 + ... + 41723.

It is an arithmetic number, because the mean of its divisors is an integer number (156435).

2⁶⁶⁷⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

667448 is a deficient number, since it is larger than the sum of its proper divisors (584032).

667448 is a wasteful number, since it uses less digits than its factorization.

667448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83437 (or 83433 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 667448 is about 816.9749078154. The cubic root of 667448 is about 87.3921610265.

The spelling of 667448 in words is "six hundred sixty-seven thousand, four hundred forty-eight".