3345020447 has 4 divisors (see below), whose sum is σ = 3345424896. Its totient is φ = 3344616000.

The previous prime is 3345020443. The next prime is 3345020501. The reversal of 3345020447 is 7440205433.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3345020447 - 2² = 3345020443 is a prime.

It is a super-2 number, since 2×3345020447² = 22378323581696159618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3345020443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189554 + ... + 206447.

It is an arithmetic number, because the mean of its divisors is an integer number (836356224).

Almost surely, 2^3345020447 is an apocalyptic number.

3345020447 is a deficient number, since it is larger than the sum of its proper divisors (404449).

3345020447 is an equidigital number, since it uses as much as digits as its factorization.

3345020447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404448.

The product of its (nonzero) digits is 40320, while the sum is 32.

The square root of 3345020447 is about 57836.1517305569. The cubic root of 3345020447 is about 1495.5453686764.

The spelling of 3345020447 in words is "three billion, three hundred forty-five million, twenty thousand, four hundred forty-seven".