424684681 has 4 divisors (see below), whose sum is σ = 424777732. Its totient is φ = 424591632.

The previous prime is 424684679. The next prime is 424684697. The reversal of 424684681 is 186486424.

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 248220025 + 176464656 = 15755^2 + 13284^2 .

It is a cyclic number.

It is not a de Polignac number, because 424684681 - 2¹ = 424684679 is a prime.

It is a super-2 number, since 2×424684681² = 360714156552143522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424684661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39306 + ... + 48931.

It is an arithmetic number, because the mean of its divisors is an integer number (106194433).

Almost surely, 2^424684681 is an apocalyptic number.

It is an amenable number.

424684681 is a deficient number, since it is larger than the sum of its proper divisors (93051).

424684681 is an equidigital number, since it uses as much as digits as its factorization.

424684681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93050.

The product of its digits is 294912, while the sum is 43.

The square root of 424684681 is about 20607.8790999947. The cubic root of 424684681 is about 751.6613134810.

The spelling of 424684681 in words is "four hundred twenty-four million, six hundred eighty-four thousand, six hundred eighty-one".