672813 has 8 divisors (see below), whose sum is σ = 996800. Its totient is φ = 448524.

The previous prime is 672811. The next prime is 672817. The reversal of 672813 is 318276.

It is not a de Polignac number, because 672813 - 2¹ = 672811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 24919 = 672813 / (6 + 7 + 2 + 8 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12433 + ... + 12486.

It is an arithmetic number, because the mean of its divisors is an integer number (124600).

2⁶⁷²⁸¹³ is an apocalyptic number.

It is an amenable number.

672813 is a deficient number, since it is larger than the sum of its proper divisors (323987).

672813 is a wasteful number, since it uses less digits than its factorization.

672813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24928 (or 24922 counting only the distinct ones).

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

The square root of 672813 is about 820.2517906107. The cubic root of 672813 is about 87.6256914699.

It can be divided in two parts, 672 and 813, that added together give a triangular number (1485 = T₅₄).

The spelling of 672813 in words is "six hundred seventy-two thousand, eight hundred thirteen".