420361663 has 2 divisors, whose sum is σ = 420361664. Its totient is φ = 420361662.

The previous prime is 420361651. The next prime is 420361673. The reversal of 420361663 is 366163024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420361663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420361633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210180831 + 210180832.

It is an arithmetic number, because the mean of its divisors is an integer number (210180832).

Almost surely, 2^420361663 is an apocalyptic number.

420361663 is a deficient number, since it is larger than the sum of its proper divisors (1).

420361663 is an equidigital number, since it uses as much as digits as its factorization.

420361663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 420361663 is about 20502.7233069171. The cubic root of 420361663 is about 749.1021332464.

The spelling of 420361663 in words is "four hundred twenty million, three hundred sixty-one thousand, six hundred sixty-three".