672806 has 4 divisors (see below), whose sum is σ = 1009212. Its totient is φ = 336402.

The previous prime is 672803. The next prime is 672811. The reversal of 672806 is 608276.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672803) by changing a digit.

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 as a sum of consecutive naturals, namely, 168200 + ... + 168203.

It is an arithmetic number, because the mean of its divisors is an integer number (252303).

2⁶⁷²⁸⁰⁶ is an apocalyptic number.

672806 is a deficient number, since it is larger than the sum of its proper divisors (336406).

672806 is a wasteful number, since it uses less digits than its factorization.

672806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336405.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 672806 is about 820.2475236171. The cubic root of 672806 is about 87.6253875806.

The spelling of 672806 in words is "six hundred seventy-two thousand, eight hundred six".