672861 has 12 divisors (see below), whose sum is σ = 1031072. Its totient is φ = 382344.

The previous prime is 672827. The next prime is 672863. The reversal of 672861 is 168276.

It is a happy number.

It is not a de Polignac number, because 672861 - 2⁹ = 672349 is a prime.

672861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672863) 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, 3670 + ... + 3848.

2⁶⁷²⁸⁶¹ is an apocalyptic number.

It is an amenable number.

672861 is a deficient number, since it is larger than the sum of its proper divisors (358211).

672861 is an equidigital number, since it uses as much as digits as its factorization.

672861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368 (or 189 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 672861 is about 820.2810493971. The cubic root of 672861 is about 87.6277752253.

The spelling of 672861 in words is "six hundred seventy-two thousand, eight hundred sixty-one".