672408 has 64 divisors (see below), whose sum is σ = 2044800. Its totient is φ = 203040.

The previous prime is 672379. The next prime is 672439. The reversal of 672408 is 804276.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

672408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 15 ways as a sum of consecutive naturals, for example, 2235 + ... + 2517.

It is an arithmetic number, because the mean of its divisors is an integer number (31950).

2⁶⁷²⁴⁰⁸ 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 672408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022400).

672408 is an abundant number, since it is smaller than the sum of its proper divisors (1372392).

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

672408 is a wasteful number, since it uses less digits than its factorization.

672408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 672408 is about 820.0048780343. The cubic root of 672408 is about 87.6081058365.

The spelling of 672408 in words is "six hundred seventy-two thousand, four hundred eight".