2173305 has 8 divisors (see below), whose sum is σ = 3477312. Its totient is φ = 1159088.

The previous prime is 2173243. The next prime is 2173307. The reversal of 2173305 is 5033712.

It is a happy number.

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 2173305 - 2¹⁷ = 2042233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2173307) 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, 72429 + ... + 72458.

It is an arithmetic number, because the mean of its divisors is an integer number (434664).

2^2173305 is an apocalyptic number.

It is an amenable number.

2173305 is a deficient number, since it is larger than the sum of its proper divisors (1304007).

2173305 is a wasteful number, since it uses less digits than its factorization.

2173305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144895.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 2173305 is about 1474.2133495529. The cubic root of 2173305 is about 129.5309526843.

The spelling of 2173305 in words is "two million, one hundred seventy-three thousand, three hundred five".