3318947 has 2 divisors, whose sum is σ = 3318948. Its totient is φ = 3318946.

The previous prime is 3318943. The next prime is 3318983. The reversal of 3318947 is 7498133.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3318947 - 2² = 3318943 is a prime.

It is a super-2 number, since 2×3318947² = 22030818377618, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3318943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1659473 + 1659474.

It is an arithmetic number, because the mean of its divisors is an integer number (1659474).

Almost surely, 2^3318947 is an apocalyptic number.

3318947 is a deficient number, since it is larger than the sum of its proper divisors (1).

3318947 is an equidigital number, since it uses as much as digits as its factorization.

3318947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 3318947 is about 1821.7977384990. The cubic root of 3318947 is about 149.1649450332.

The spelling of 3318947 in words is "three million, three hundred eighteen thousand, nine hundred forty-seven".