673456279 has 4 divisors (see below), whose sum is σ = 687785184. Its totient is φ = 659127376.

The previous prime is 673456219. The next prime is 673456313. The reversal of 673456279 is 972654376.

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

It is a cyclic number.

It is not a de Polignac number, because 673456279 - 2⁷ = 673456151 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673456219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7164382 + ... + 7164475.

It is an arithmetic number, because the mean of its divisors is an integer number (171946296).

Almost surely, 2^673456279 is an apocalyptic number.

673456279 is a deficient number, since it is larger than the sum of its proper divisors (14328905).

673456279 is a wasteful number, since it uses less digits than its factorization.

673456279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14328904.

The product of its digits is 1905120, while the sum is 49.

The square root of 673456279 is about 25951.0361835515. The cubic root of 673456279 is about 876.5360899041.

The spelling of 673456279 in words is "six hundred seventy-three million, four hundred fifty-six thousand, two hundred seventy-nine".