672868 has 18 divisors (see below), whose sum is σ = 1370166. Its totient is φ = 288288.

The previous prime is 672863. The next prime is 672869. The reversal of 672868 is 868276.

It can be written as a sum of positive squares in only one way, i.e., 529984 + 142884 = 728^2 + 378^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1521 + ... + 1912.

2⁶⁷²⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

672868 is an abundant number, since it is smaller than the sum of its proper divisors (697298).

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

672868 is a wasteful number, since it uses less digits than its factorization.

672868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3451 (or 3442 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 672868 is about 820.2853162163. The cubic root of 672868 is about 87.6280790980.

It can be divided in two parts, 672 and 868, that added together give a triangular number (1540 = T₅₅).

The spelling of 672868 in words is "six hundred seventy-two thousand, eight hundred sixty-eight".