673456 has 30 divisors (see below), whose sum is σ = 1519620. Its totient is φ = 288288.

The previous prime is 673451. The next prime is 673457. The reversal of 673456 is 654376.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (673451) by changing a digit.

673456 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355 + ... + 1213.

It is an arithmetic number, because the mean of its divisors is an integer number (50654).

2⁶⁷³⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759810).

673456 is an abundant number, since it is smaller than the sum of its proper divisors (846164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673456 is a wasteful number, since it uses less digits than its factorization.

673456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 868 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 673456 is about 820.6436498262. The cubic root of 673456 is about 87.6535968860.

The spelling of 673456 in words is "six hundred seventy-three thousand, four hundred fifty-six".