420618703 has 2 divisors, whose sum is σ = 420618704. Its totient is φ = 420618702.

The previous prime is 420618689. The next prime is 420618739. The reversal of 420618703 is 307816024.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420618703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420618763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210309351 + 210309352.

It is an arithmetic number, because the mean of its divisors is an integer number (210309352).

Almost surely, 2^420618703 is an apocalyptic number.

420618703 is a deficient number, since it is larger than the sum of its proper divisors (1).

420618703 is an equidigital number, since it uses as much as digits as its factorization.

420618703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 420618703 is about 20508.9907845315. The cubic root of 420618703 is about 749.2547874934.

The spelling of 420618703 in words is "four hundred twenty million, six hundred eighteen thousand, seven hundred three".