420562693 has 2 divisors, whose sum is σ = 420562694. Its totient is φ = 420562692.

The previous prime is 420562631. The next prime is 420562697. The reversal of 420562693 is 396265024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412983684 + 7579009 = 20322^2 + 2753^2 .

It is a cyclic number.

It is not a de Polignac number, because 420562693 - 2¹⁷ = 420431621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420562697) 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 as a sum of consecutive naturals, namely, 210281346 + 210281347.

It is an arithmetic number, because the mean of its divisors is an integer number (210281347).

Almost surely, 2^420562693 is an apocalyptic number.

It is an amenable number.

420562693 is a deficient number, since it is larger than the sum of its proper divisors (1).

420562693 is an equidigital number, since it uses as much as digits as its factorization.

420562693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 420562693 is about 20507.6252403831. The cubic root of 420562693 is about 749.2215288490.

The spelling of 420562693 in words is "four hundred twenty million, five hundred sixty-two thousand, six hundred ninety-three".