424686685 has 4 divisors (see below), whose sum is σ = 509624028. Its totient is φ = 339749344.

The previous prime is 424686679. The next prime is 424686737. The reversal of 424686685 is 586686424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 300987801 + 123698884 = 17349^2 + 11122^2 .

It is a cyclic number.

It is not a de Polignac number, because 424686685 - 2³ = 424686677 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42468664 + ... + 42468673.

It is an arithmetic number, because the mean of its divisors is an integer number (127406007).

Almost surely, 2^424686685 is an apocalyptic number.

It is an amenable number.

424686685 is a deficient number, since it is larger than the sum of its proper divisors (84937343).

424686685 is an equidigital number, since it uses as much as digits as its factorization.

424686685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84937342.

The product of its digits is 2211840, while the sum is 49.

The square root of 424686685 is about 20607.9277221170. The cubic root of 424686685 is about 751.6624957911.

The spelling of 424686685 in words is "four hundred twenty-four million, six hundred eighty-six thousand, six hundred eighty-five".