556670447 has 2 divisors, whose sum is σ = 556670448. Its totient is φ = 556670446.

The previous prime is 556670437. The next prime is 556670507. The reversal of 556670447 is 744076655.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556670447 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 556670398 and 556670407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556670437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278335223 + 278335224.

It is an arithmetic number, because the mean of its divisors is an integer number (278335224).

Almost surely, 2^556670447 is an apocalyptic number.

556670447 is a deficient number, since it is larger than the sum of its proper divisors (1).

556670447 is an equidigital number, since it uses as much as digits as its factorization.

556670447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 44.

The square root of 556670447 is about 23593.8646050197. The cubic root of 556670447 is about 822.6202357463.

The spelling of 556670447 in words is "five hundred fifty-six million, six hundred seventy thousand, four hundred forty-seven".