670980 has 48 divisors (see below), whose sum is σ = 1923264. Its totient is φ = 174720.

The previous prime is 670963. The next prime is 670987. The reversal of 670980 is 89076.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (670987) by changing a digit.

670980 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 15 ways as a sum of consecutive naturals, for example, 3075 + ... + 3285.

It is an arithmetic number, because the mean of its divisors is an integer number (40068).

2⁶⁷⁰⁹⁸⁰ is an apocalyptic number.

670980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961632).

670980 is an abundant number, since it is smaller than the sum of its proper divisors (1252284).

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

670980 is a wasteful number, since it uses less digits than its factorization.

670980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 670980 is about 819.1336887224. The cubic root of 670980 is about 87.5460437940.

670980 divided by its sum of digits (30) gives a triangular number (22366 = T₂₁₁).

The spelling of 670980 in words is "six hundred seventy thousand, nine hundred eighty".