426664547 has 2 divisors, whose sum is σ = 426664548. Its totient is φ = 426664546.

The previous prime is 426664541. The next prime is 426664583. The reversal of 426664547 is 745466624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426664547 - 2¹⁴ = 426648163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 426664498 and 426664507.

It is not a weakly prime, because it can be changed into another prime (426664541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213332273 + 213332274.

It is an arithmetic number, because the mean of its divisors is an integer number (213332274).

Almost surely, 2^426664547 is an apocalyptic number.

426664547 is a deficient number, since it is larger than the sum of its proper divisors (1).

426664547 is an equidigital number, since it uses as much as digits as its factorization.

426664547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 44.

The square root of 426664547 is about 20655.8598707485. The cubic root of 426664547 is about 752.8275764261.

The spelling of 426664547 in words is "four hundred twenty-six million, six hundred sixty-four thousand, five hundred forty-seven".