670480 has 60 divisors (see below), whose sum is σ = 1713060. Its totient is φ = 243712.

The previous prime is 670471. The next prime is 670487. The reversal of 670480 is 84076.

It can be written as a sum of positive squares in 6 ways, for example, as 36864 + 633616 = 192^2 + 796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670487) by changing a digit.

670480 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23106 + ... + 23134.

It is an arithmetic number, because the mean of its divisors is an integer number (28551).

2⁶⁷⁰⁴⁸⁰ 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 670480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (856530).

670480 is an abundant number, since it is smaller than the sum of its proper divisors (1042580).

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

670480 is a wasteful number, since it uses less digits than its factorization.

670480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 670480 is about 818.8284313579. The cubic root of 670480 is about 87.5242925748.

The spelling of 670480 in words is "six hundred seventy thousand, four hundred eighty".