424387687 has 2 divisors, whose sum is σ = 424387688. Its totient is φ = 424387686.

The previous prime is 424387681. The next prime is 424387703. The reversal of 424387687 is 786783424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424387687 - 2¹⁵ = 424354919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 424387687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424387681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212193843 + 212193844.

It is an arithmetic number, because the mean of its divisors is an integer number (212193844).

Almost surely, 2^424387687 is an apocalyptic number.

424387687 is a deficient number, since it is larger than the sum of its proper divisors (1).

424387687 is an equidigital number, since it uses as much as digits as its factorization.

424387687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 49.

The square root of 424387687 is about 20600.6720036022. The cubic root of 424387687 is about 751.4860532865.

The spelling of 424387687 in words is "four hundred twenty-four million, three hundred eighty-seven thousand, six hundred eighty-seven".