420436613 has 2 divisors, whose sum is σ = 420436614. Its totient is φ = 420436612.

The previous prime is 420436609. The next prime is 420436637. The reversal of 420436613 is 316634024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257057089 + 163379524 = 16033^2 + 12782^2 .

It is a cyclic number.

It is not a de Polignac number, because 420436613 - 2² = 420436609 is a prime.

It is a super-3 number, since 3×420436613³ (a number of 27 digits) contains 333 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 (420436603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210218306 + 210218307.

It is an arithmetic number, because the mean of its divisors is an integer number (210218307).

Almost surely, 2^420436613 is an apocalyptic number.

It is an amenable number.

420436613 is a deficient number, since it is larger than the sum of its proper divisors (1).

420436613 is an equidigital number, since it uses as much as digits as its factorization.

420436613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 420436613 is about 20504.5510314174. The cubic root of 420436613 is about 749.1466519496.

The spelling of 420436613 in words is "four hundred twenty million, four hundred thirty-six thousand, six hundred thirteen".