420736487 has 2 divisors, whose sum is σ = 420736488. Its totient is φ = 420736486.

The previous prime is 420736469. The next prime is 420736489. The reversal of 420736487 is 784637024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420736487 - 2⁶ = 420736423 is a prime.

Together with 420736489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420736489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210368243 + 210368244.

It is an arithmetic number, because the mean of its divisors is an integer number (210368244).

Almost surely, 2^420736487 is an apocalyptic number.

420736487 is a deficient number, since it is larger than the sum of its proper divisors (1).

420736487 is an equidigital number, since it uses as much as digits as its factorization.

420736487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 420736487 is about 20511.8621046457. The cubic root of 420736487 is about 749.3247178040.

The spelling of 420736487 in words is "four hundred twenty million, seven hundred thirty-six thousand, four hundred eighty-seven".