320670 has 48 divisors (see below), whose sum is σ = 954720. Its totient is φ = 73152.

The previous prime is 320669. The next prime is 320687. The reversal of 320670 is 76023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320670.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 376 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (19890).

2³²⁰⁶⁷⁰ is an apocalyptic number.

320670 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477360).

320670 is an abundant number, since it is smaller than the sum of its proper divisors (634050).

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

320670 is a wasteful number, since it uses less digits than its factorization.

320670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 526 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 320670 is about 566.2773172219. The cubic root of 320670 is about 68.4467414180.

Adding to 320670 its reverse (76023), we get a palindrome (396693).

It can be divided in two parts, 320 and 670, that added together give a triangular number (990 = T₄₄).

The spelling of 320670 in words is "three hundred twenty thousand, six hundred seventy".