345456605 has 24 divisors (see below), whose sum is σ = 459715032. Its totient is φ = 247556736.

The previous prime is 345456599. The next prime is 345456641. The reversal of 345456605 is 506654543.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41512249 + 303944356 = 6443^2 + 17434^2 .

It is not a de Polignac number, because 345456605 - 2⁴ = 345456589 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 911306 + ... + 911684.

It is an arithmetic number, because the mean of its divisors is an integer number (19154793).

Almost surely, 2^345456605 is an apocalyptic number.

It is an amenable number.

345456605 is a deficient number, since it is larger than the sum of its proper divisors (114258427).

345456605 is an equidigital number, since it uses as much as digits as its factorization.

345456605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 345456605 is about 18586.4629502227. The cubic root of 345456605 is about 701.6671859843.

The spelling of 345456605 in words is "three hundred forty-five million, four hundred fifty-six thousand, six hundred five".