3456321 has 32 divisors (see below), whose sum is σ = 5463936. Its totient is φ = 1920000.

The previous prime is 3456319. The next prime is 3456337. The reversal of 3456321 is 1236543.

It is a happy number.

3456321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3456321 - 2¹ = 3456319 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3456291 and 3456300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3456301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34171 + ... + 34271.

It is an arithmetic number, because the mean of its divisors is an integer number (170748).

Almost surely, 2^3456321 is an apocalyptic number.

It is an amenable number.

3456321 is a deficient number, since it is larger than the sum of its proper divisors (2007615).

3456321 is a wasteful number, since it uses less digits than its factorization.

3456321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193.

The product of its digits is 2160, while the sum is 24.

The square root of 3456321 is about 1859.1183394287. The cubic root of 3456321 is about 151.1952067991.

It can be divided in two parts, 345 and 6321, that added together give a palindrome (6666).

The spelling of 3456321 in words is "three million, four hundred fifty-six thousand, three hundred twenty-one".