673407 has 24 divisors (see below), whose sum is σ = 1162800. Its totient is φ = 384048.

The previous prime is 673403. The next prime is 673411. The reversal of 673407 is 704376.

It is an interprime number because it is at equal distance from previous prime (673403) and next prime (673411).

It is not a de Polignac number, because 673407 - 2² = 673403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1069 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (48450).

2⁶⁷³⁴⁰⁷ is an apocalyptic number.

673407 is a deficient number, since it is larger than the sum of its proper divisors (489393).

673407 is a wasteful number, since it uses less digits than its factorization.

673407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 673407 is about 820.6137946684. The cubic root of 673407 is about 87.6514709711.

Subtracting from 673407 its sum of digits (27), we obtain a triangular number (673380 = T₁₁₆₀).

The spelling of 673407 in words is "six hundred seventy-three thousand, four hundred seven".