673722605 has 8 divisors (see below), whose sum is σ = 811474200. Its totient is φ = 536973376.

The previous prime is 673722583. The next prime is 673722617. The reversal of 673722605 is 506227376.

It can be written as a sum of positive squares in 4 ways, for example, as 25867396 + 647855209 = 5086^2 + 25453^2 .

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 673722605 - 2¹² = 673718509 is a prime.

It is a congruent 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, 249110 + ... + 251799.

It is an arithmetic number, because the mean of its divisors is an integer number (101434275).

Almost surely, 2^673722605 is an apocalyptic number.

It is an amenable number.

673722605 is a deficient number, since it is larger than the sum of its proper divisors (137751595).

673722605 is a wasteful number, since it uses less digits than its factorization.

673722605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501183.

The product of its (nonzero) digits is 105840, while the sum is 38.

The square root of 673722605 is about 25956.1669936067. The cubic root of 673722605 is about 876.6516200887.

The spelling of 673722605 in words is "six hundred seventy-three million, seven hundred twenty-two thousand, six hundred five".