672187 has 4 divisors (see below), whose sum is σ = 683640. Its totient is φ = 660736.

The previous prime is 672181. The next prime is 672193. The reversal of 672187 is 781276.

It is a happy number.

672187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (672181) and next prime (672193).

It is a cyclic number.

It is not a de Polignac number, because 672187 - 2⁷ = 672059 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5638 + ... + 5755.

It is an arithmetic number, because the mean of its divisors is an integer number (170910).

2⁶⁷²¹⁸⁷ is an apocalyptic number.

672187 is a deficient number, since it is larger than the sum of its proper divisors (11453).

672187 is a wasteful number, since it uses less digits than its factorization.

672187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11452.

The product of its digits is 4704, while the sum is 31.

The square root of 672187 is about 819.8701116640. The cubic root of 672187 is about 87.5985067474.

The spelling of 672187 in words is "six hundred seventy-two thousand, one hundred eighty-seven".