672770 has 24 divisors (see below), whose sum is σ = 1409724. Its totient is φ = 230496.

The previous prime is 672767. The next prime is 672779. The reversal of 672770 is 77276.

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 47089 = 791^2 + 217^2 .

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672770.

It is not an unprimeable number, because it can be changed into a prime (672779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197 + ... + 1176.

2⁶⁷²⁷⁷⁰ is an apocalyptic number.

672770 is an abundant number, since it is smaller than the sum of its proper divisors (736954).

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

672770 is a wasteful number, since it uses less digits than its factorization.

672770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 29.

The square root of 672770 is about 820.2255787282. The cubic root of 672770 is about 87.6238246882.

The spelling of 672770 in words is "six hundred seventy-two thousand, seven hundred seventy".