345520605 has 32 divisors (see below), whose sum is σ = 607242240. Its totient is φ = 166985280.

The previous prime is 345520603. The next prime is 345520667. The reversal of 345520605 is 506025543.

It is not a de Polignac number, because 345520605 - 2¹ = 345520603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345520603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19801 + ... + 32910.

It is an arithmetic number, because the mean of its divisors is an integer number (18976320).

Almost surely, 2^345520605 is an apocalyptic number.

It is an amenable number.

345520605 is a deficient number, since it is larger than the sum of its proper divisors (261721635).

345520605 is a wasteful number, since it uses less digits than its factorization.

345520605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52761.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 345520605 is about 18588.1845536351. The cubic root of 345520605 is about 701.7105140766.

The spelling of 345520605 in words is "three hundred forty-five million, five hundred twenty thousand, six hundred five".