345646543 has 12 divisors (see below), whose sum is σ = 383700744. Its totient is φ = 311102000.

The previous prime is 345646529. The next prime is 345646577.

It is a happy number.

345646543 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 345646543 - 2²¹ = 343549391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345646496 and 345646505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345646583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1921 + ... + 26362.

It is an arithmetic number, because the mean of its divisors is an integer number (31975062).

Almost surely, 2^345646543 is an apocalyptic number.

345646543 is a deficient number, since it is larger than the sum of its proper divisors (38054201).

345646543 is a wasteful number, since it uses less digits than its factorization.

345646543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28406 (or 28395 counting only the distinct ones).

The product of its digits is 518400, while the sum is 40.

The square root of 345646543 is about 18591.5718270403. The cubic root of 345646543 is about 701.7957586638.

The spelling of 345646543 in words is "three hundred forty-five million, six hundred forty-six thousand, five hundred forty-three".