427718773 has 2 divisors, whose sum is σ = 427718774. Its totient is φ = 427718772.

The previous prime is 427718771. The next prime is 427718777. The reversal of 427718773 is 377817724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316057284 + 111661489 = 17778^2 + 10567^2 .

It is a cyclic number.

It is not a de Polignac number, because 427718773 - 2¹ = 427718771 is a prime.

Together with 427718771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427718771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213859386 + 213859387.

It is an arithmetic number, because the mean of its divisors is an integer number (213859387).

Almost surely, 2^427718773 is an apocalyptic number.

It is an amenable number.

427718773 is a deficient number, since it is larger than the sum of its proper divisors (1).

427718773 is an equidigital number, since it uses as much as digits as its factorization.

427718773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 460992, while the sum is 46.

The square root of 427718773 is about 20681.3629386460. The cubic root of 427718773 is about 753.4471089066.

The spelling of 427718773 in words is "four hundred twenty-seven million, seven hundred eighteen thousand, seven hundred seventy-three".