667480 has 64 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 230400.

The previous prime is 667477. The next prime is 667487. The reversal of 667480 is 84766.

667480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16260 + ... + 16300.

2⁶⁶⁷⁴⁸⁰ 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 667480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861840).

667480 is an abundant number, since it is smaller than the sum of its proper divisors (1056200).

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

667480 is a wasteful number, since it uses less digits than its factorization.

667480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 667480 is about 816.9944920255. The cubic root of 667480 is about 87.3935576419.

The spelling of 667480 in words is "six hundred sixty-seven thousand, four hundred eighty".