3447645 has 16 divisors (see below), whose sum is σ = 5807040. Its totient is φ = 1741824.

The previous prime is 3447643. The next prime is 3447673. The reversal of 3447645 is 5467443.

It is a happy number.

It is not a de Polignac number, because 3447645 - 2¹ = 3447643 is a prime.

3447645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3447641) 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 15 ways as a sum of consecutive naturals, for example, 5764 + ... + 6333.

It is an arithmetic number, because the mean of its divisors is an integer number (362940).

Almost surely, 2^3447645 is an apocalyptic number.

It is an amenable number.

3447645 is a deficient number, since it is larger than the sum of its proper divisors (2359395).

3447645 is a wasteful number, since it uses less digits than its factorization.

3447645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12124.

The product of its digits is 40320, while the sum is 33.

The square root of 3447645 is about 1856.7835091900. The cubic root of 3447645 is about 151.0685915589.

The spelling of 3447645 in words is "three million, four hundred forty-seven thousand, six hundred forty-five".