345221206 has 16 divisors (see below), whose sum is σ = 565199568. Its totient is φ = 156837600.

The previous prime is 345221197. The next prime is 345221207. The reversal of 345221206 is 602122543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345221207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67516 + ... + 72448.

It is an arithmetic number, because the mean of its divisors is an integer number (35324973).

Almost surely, 2^345221206 is an apocalyptic number.

345221206 is a deficient number, since it is larger than the sum of its proper divisors (219978362).

345221206 is a wasteful number, since it uses less digits than its factorization.

345221206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8127.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 345221206 is about 18580.1293321656. The cubic root of 345221206 is about 701.5077744668.

Adding to 345221206 its reverse (602122543), we get a palindrome (947343749).

The spelling of 345221206 in words is "three hundred forty-five million, two hundred twenty-one thousand, two hundred six".