673217291 has 8 divisors (see below), whose sum is σ = 739461120. Its totient is φ = 610054632.

The previous prime is 673217269. The next prime is 673217309. The reversal of 673217291 is 192712376.

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 673217291 - 2⁶ = 673217227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673217231) 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, 769835 + ... + 770708.

It is an arithmetic number, because the mean of its divisors is an integer number (92432640).

Almost surely, 2^673217291 is an apocalyptic number.

673217291 is a deficient number, since it is larger than the sum of its proper divisors (66243829).

673217291 is a wasteful number, since it uses less digits than its factorization.

673217291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540585.

The product of its digits is 31752, while the sum is 38.

The square root of 673217291 is about 25946.4311804148. The cubic root of 673217291 is about 876.4323928031.

The spelling of 673217291 in words is "six hundred seventy-three million, two hundred seventeen thousand, two hundred ninety-one".