672687 has 12 divisors (see below), whose sum is σ = 995904. Its totient is φ = 437280.

The previous prime is 672667. The next prime is 672703. The reversal of 672687 is 786276.

It is not a de Polignac number, because 672687 - 2¹¹ = 670639 is a prime.

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 672687.

It is not an unprimeable number, because it can be changed into a prime (672667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 543 + ... + 1280.

It is an arithmetic number, because the mean of its divisors is an integer number (82992).

2⁶⁷²⁶⁸⁷ is an apocalyptic number.

672687 is a deficient number, since it is larger than the sum of its proper divisors (323217).

672687 is a wasteful number, since it uses less digits than its factorization.

672687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1867 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 672687 is about 820.1749813302. The cubic root of 672687 is about 87.6202211404.

The spelling of 672687 in words is "six hundred seventy-two thousand, six hundred eighty-seven".