672381 has 12 divisors (see below), whose sum is σ = 1007552. Its totient is φ = 448092.

The previous prime is 672379. The next prime is 672439. The reversal of 672381 is 183276.

672381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 672381 - 2¹ = 672379 is a prime.

It is a super-2 number, since 2×672381² = 904192418322, which contains 22 as substring.

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

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 672381.

It is not an unprimeable number, because it can be changed into a prime (672311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1141 + ... + 1626.

2⁶⁷²³⁸¹ is an apocalyptic number.

It is an amenable number.

672381 is a deficient number, since it is larger than the sum of its proper divisors (335171).

672381 is an equidigital number, since it uses as much as digits as its factorization.

672381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2770 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 672381 is about 819.9884145523. The cubic root of 672381 is about 87.6069332099.

The spelling of 672381 in words is "six hundred seventy-two thousand, three hundred eighty-one".