345665473 has 4 divisors (see below), whose sum is σ = 346369968. Its totient is φ = 344960980.

The previous prime is 345665447. The next prime is 345665479. The reversal of 345665473 is 374566543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345665473 - 2¹³ = 345657281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345665479) 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, 351511 + ... + 352492.

It is an arithmetic number, because the mean of its divisors is an integer number (86592492).

Almost surely, 2^345665473 is an apocalyptic number.

It is an amenable number.

345665473 is a deficient number, since it is larger than the sum of its proper divisors (704495).

345665473 is an equidigital number, since it uses as much as digits as its factorization.

345665473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704494.

The product of its digits is 907200, while the sum is 43.

The square root of 345665473 is about 18592.0809217258. The cubic root of 345665473 is about 701.8085701630.

The spelling of 345665473 in words is "three hundred forty-five million, six hundred sixty-five thousand, four hundred seventy-three".