345645855 has 24 divisors (see below), whose sum is σ = 604944288. Its totient is φ = 182552256.

The previous prime is 345645851. The next prime is 345645893. The reversal of 345645855 is 558546543.

345645855 is a `hidden beast` number, since 3 + 4 + 5 + 64 + 585 + 5 = 666.

It is not a de Polignac number, because 345645855 - 2² = 345645851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 345645855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345645851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32652 + ... + 41921.

It is an arithmetic number, because the mean of its divisors is an integer number (25206012).

Almost surely, 2^345645855 is an apocalyptic number.

345645855 is a deficient number, since it is larger than the sum of its proper divisors (259298433).

345645855 is a wasteful number, since it uses less digits than its factorization.

345645855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74687 (or 74684 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 45.

The square root of 345645855 is about 18591.5533240233. The cubic root of 345645855 is about 701.7952930284.

The spelling of 345645855 in words is "three hundred forty-five million, six hundred forty-five thousand, eight hundred fifty-five".