426057637 has 2 divisors, whose sum is σ = 426057638. Its totient is φ = 426057636.

The previous prime is 426057617. The next prime is 426057641. The reversal of 426057637 is 736750624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285136996 + 140920641 = 16886^2 + 11871^2 .

It is a cyclic number.

It is not a de Polignac number, because 426057637 - 2¹¹ = 426055589 is a prime.

It is a super-2 number, since 2×426057637² = 363050220092047538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 426057637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426057617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213028818 + 213028819.

It is an arithmetic number, because the mean of its divisors is an integer number (213028819).

Almost surely, 2^426057637 is an apocalyptic number.

It is an amenable number.

426057637 is a deficient number, since it is larger than the sum of its proper divisors (1).

426057637 is an equidigital number, since it uses as much as digits as its factorization.

426057637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 426057637 is about 20641.1636542129. The cubic root of 426057637 is about 752.4704532499.

The spelling of 426057637 in words is "four hundred twenty-six million, fifty-seven thousand, six hundred thirty-seven".