672704 has 28 divisors (see below), whose sum is σ = 1395984. Its totient is φ = 321024.

The previous prime is 672703. The next prime is 672743. The reversal of 672704 is 407276.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672703) 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 3 ways as a sum of consecutive naturals, for example, 1244 + ... + 1700.

2⁶⁷²⁷⁰⁴ is an apocalyptic number.

672704 is a gapful number since it is divisible by the number (64) 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 672704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697992).

672704 is an abundant number, since it is smaller than the sum of its proper divisors (723280).

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

672704 is a wasteful number, since it uses less digits than its factorization.

672704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 672704 is about 820.1853449069. The cubic root of 672704 is about 87.6209592406.

The spelling of 672704 in words is "six hundred seventy-two thousand, seven hundred four".