672880 has 40 divisors (see below), whose sum is σ = 1687392. Its totient is φ = 248064.

The previous prime is 672871. The next prime is 672883. The reversal of 672880 is 88276.

672880 = 68² + 69² + ... + 132².

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672883) 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 7 ways as a sum of consecutive naturals, for example, 717 + ... + 1363.

2⁶⁷²⁸⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (843696).

672880 is an abundant number, since it is smaller than the sum of its proper divisors (1014512).

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

672880 is a wasteful number, since it uses less digits than its factorization.

672880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 672880 is about 820.2926307117. The cubic root of 672880 is about 87.6286000177.

The spelling of 672880 in words is "six hundred seventy-two thousand, eight hundred eighty".