420370637 has 2 divisors, whose sum is σ = 420370638. Its totient is φ = 420370636.

The previous prime is 420370607. The next prime is 420370651. The reversal of 420370637 is 736073024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285136996 + 135233641 = 16886^2 + 11629^2 .

It is a cyclic number.

It is not a de Polignac number, because 420370637 - 2¹⁶ = 420305101 is a prime.

It is a super-2 number, since 2×420370637² = 353422944903571538, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420370607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210185318 + 210185319.

It is an arithmetic number, because the mean of its divisors is an integer number (210185319).

Almost surely, 2^420370637 is an apocalyptic number.

It is an amenable number.

420370637 is a deficient number, since it is larger than the sum of its proper divisors (1).

420370637 is an equidigital number, since it uses as much as digits as its factorization.

420370637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The square root of 420370637 is about 20502.9421547250. The cubic root of 420370637 is about 749.1074638900.

The spelling of 420370637 in words is "four hundred twenty million, three hundred seventy thousand, six hundred thirty-seven".