426637487 has 2 divisors, whose sum is σ = 426637488. Its totient is φ = 426637486.

The previous prime is 426637481. The next prime is 426637517. The reversal of 426637487 is 784736624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426637487 - 2¹⁸ = 426375343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426637481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213318743 + 213318744.

It is an arithmetic number, because the mean of its divisors is an integer number (213318744).

Almost surely, 2^426637487 is an apocalyptic number.

426637487 is a deficient number, since it is larger than the sum of its proper divisors (1).

426637487 is an equidigital number, since it uses as much as digits as its factorization.

426637487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 47.

The square root of 426637487 is about 20655.2048404270. The cubic root of 426637487 is about 752.8116607650.

The spelling of 426637487 in words is "four hundred twenty-six million, six hundred thirty-seven thousand, four hundred eighty-seven".