427662617 has 2 divisors, whose sum is σ = 427662618. Its totient is φ = 427662616.

The previous prime is 427662601. The next prime is 427662619. The reversal of 427662617 is 716266724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236421376 + 191241241 = 15376^2 + 13829^2 .

427662617 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 427662617 - 2⁴ = 427662601 is a prime.

Together with 427662619, 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 (427662619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213831308 + 213831309.

It is an arithmetic number, because the mean of its divisors is an integer number (213831309).

Almost surely, 2^427662617 is an apocalyptic number.

It is an amenable number.

427662617 is a deficient number, since it is larger than the sum of its proper divisors (1).

427662617 is an equidigital number, since it uses as much as digits as its factorization.

427662617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 427662617 is about 20680.0052466144. The cubic root of 427662617 is about 753.4141336354.

The spelling of 427662617 in words is "four hundred twenty-seven million, six hundred sixty-two thousand, six hundred seventeen".