667552 has 24 divisors (see below), whose sum is σ = 1372896. Its totient is φ = 318912.

The previous prime is 667549. The next prime is 667553. The reversal of 667552 is 255766.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (667553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283 + ... + 1189.

It is an arithmetic number, because the mean of its divisors is an integer number (57204).

2⁶⁶⁷⁵⁵² 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 667552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686448).

667552 is an abundant number, since it is smaller than the sum of its proper divisors (705344).

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

667552 is a wasteful number, since it uses less digits than its factorization.

667552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 932 counting only the distinct ones).

The product of its digits is 12600, while the sum is 31.

The square root of 667552 is about 817.0385547818. The cubic root of 667552 is about 87.3966998633.

The spelling of 667552 in words is "six hundred sixty-seven thousand, five hundred fifty-two".