427716587 has 2 divisors, whose sum is σ = 427716588. Its totient is φ = 427716586.

The previous prime is 427716577. The next prime is 427716589. The reversal of 427716587 is 785617724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427716587 - 2²² = 423522283 is a prime.

Together with 427716589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (427716589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213858293 + 213858294.

It is an arithmetic number, because the mean of its divisors is an integer number (213858294).

Almost surely, 2^427716587 is an apocalyptic number.

427716587 is a deficient number, since it is larger than the sum of its proper divisors (1).

427716587 is an equidigital number, since it uses as much as digits as its factorization.

427716587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 47.

The square root of 427716587 is about 20681.3100890635. The cubic root of 427716587 is about 753.4458253232.

The spelling of 427716587 in words is "four hundred twenty-seven million, seven hundred sixteen thousand, five hundred eighty-seven".