345540565 has 8 divisors (see below), whose sum is σ = 414761688. Its totient is φ = 276357120.

The previous prime is 345540551. The next prime is 345540581. The reversal of 345540565 is 565045543.

It can be written as a sum of positive squares in 4 ways, for example, as 7789681 + 337750884 = 2791^2 + 18378^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345540565 - 2⁹ = 345540053 is a prime.

It is a Duffinian number.

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, 18045 + ... + 31885.

It is an arithmetic number, because the mean of its divisors is an integer number (51845211).

Almost surely, 2^345540565 is an apocalyptic number.

It is an amenable number.

345540565 is a deficient number, since it is larger than the sum of its proper divisors (69221123).

345540565 is a wasteful number, since it uses less digits than its factorization.

345540565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18839.

The product of its (nonzero) digits is 180000, while the sum is 37.

The square root of 345540565 is about 18588.7214460812. The cubic root of 345540565 is about 701.7240259309.

The spelling of 345540565 in words is "three hundred forty-five million, five hundred forty thousand, five hundred sixty-five".