427772617 has 2 divisors, whose sum is σ = 427772618. Its totient is φ = 427772616.

The previous prime is 427772599. The next prime is 427772623. The reversal of 427772617 is 716277724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345253561 + 82519056 = 18581^2 + 9084^2 .

It is a cyclic number.

It is not a de Polignac number, because 427772617 - 2⁷ = 427772489 is a prime.

It is equal to p_22735987 and since 427772617 and 22735987 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (427772017) 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, 213886308 + 213886309.

It is an arithmetic number, because the mean of its divisors is an integer number (213886309).

Almost surely, 2^427772617 is an apocalyptic number.

It is an amenable number.

427772617 is a deficient number, since it is larger than the sum of its proper divisors (1).

427772617 is an equidigital number, since it uses as much as digits as its factorization.

427772617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230496, while the sum is 43.

The square root of 427772617 is about 20682.6646494111. The cubic root of 427772617 is about 753.4787238419.

The spelling of 427772617 in words is "four hundred twenty-seven million, seven hundred seventy-two thousand, six hundred seventeen".