426747637 has 2 divisors, whose sum is σ = 426747638. Its totient is φ = 426747636.

The previous prime is 426747599. The next prime is 426747647. The reversal of 426747637 is 736747624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418857156 + 7890481 = 20466^2 + 2809^2 .

It is a cyclic number.

It is not a de Polignac number, because 426747637 - 2¹⁹ = 426223349 is a prime.

It is a super-2 number, since 2×426747637² = 364227091370167538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426747647) 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, 213373818 + 213373819.

It is an arithmetic number, because the mean of its divisors is an integer number (213373819).

Almost surely, 2^426747637 is an apocalyptic number.

It is an amenable number.

426747637 is a deficient number, since it is larger than the sum of its proper divisors (1).

426747637 is an equidigital number, since it uses as much as digits as its factorization.

426747637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 46.

The square root of 426747637 is about 20657.8710664967. The cubic root of 426747637 is about 752.8764425932.

The spelling of 426747637 in words is "four hundred twenty-six million, seven hundred forty-seven thousand, six hundred thirty-seven".