345623545 has 4 divisors (see below), whose sum is σ = 414748260. Its totient is φ = 276498832.

The previous prime is 345623543. The next prime is 345623567. The reversal of 345623545 is 545326543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261662976 + 83960569 = 16176^2 + 9163^2 .

It is a cyclic number.

It is not a de Polignac number, because 345623545 - 2¹ = 345623543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345623543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34562350 + ... + 34562359.

It is an arithmetic number, because the mean of its divisors is an integer number (103687065).

Almost surely, 2^345623545 is an apocalyptic number.

It is an amenable number.

345623545 is a deficient number, since it is larger than the sum of its proper divisors (69124715).

345623545 is an equidigital number, since it uses as much as digits as its factorization.

345623545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69124714.

The product of its digits is 216000, while the sum is 37.

The square root of 345623545 is about 18590.9533106831. The cubic root of 345623545 is about 701.7801933827.

The spelling of 345623545 in words is "three hundred forty-five million, six hundred twenty-three thousand, five hundred forty-five".