673479305 has 8 divisors (see below), whose sum is σ = 808355592. Its totient is φ = 538663168.

The previous prime is 673479271. The next prime is 673479319. The reversal of 673479305 is 503974376.

It can be written as a sum of positive squares in 4 ways, for example, as 136352329 + 537126976 = 11677^2 + 23176^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 673479305 - 2²⁶ = 606370441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15089 + ... + 39681.

It is an arithmetic number, because the mean of its divisors is an integer number (101044449).

Almost surely, 2^673479305 is an apocalyptic number.

It is an amenable number.

673479305 is a deficient number, since it is larger than the sum of its proper divisors (134876287).

673479305 is a wasteful number, since it uses less digits than its factorization.

673479305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30075.

The product of its (nonzero) digits is 476280, while the sum is 44.

The square root of 673479305 is about 25951.4798229311. The cubic root of 673479305 is about 876.5460796097.

The spelling of 673479305 in words is "six hundred seventy-three million, four hundred seventy-nine thousand, three hundred five".