427755663 has 12 divisors (see below), whose sum is σ = 618090928. Its totient is φ = 285068160.

The previous prime is 427755659. The next prime is 427755673. The reversal of 427755663 is 366557724.

It is not a de Polignac number, because 427755663 - 2² = 427755659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427755623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24831 + ... + 38367.

Almost surely, 2^427755663 is an apocalyptic number.

427755663 is a deficient number, since it is larger than the sum of its proper divisors (190335265).

427755663 is a wasteful number, since it uses less digits than its factorization.

427755663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17054 (or 17051 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The square root of 427755663 is about 20682.2547852017. The cubic root of 427755663 is about 753.4687694513.

The spelling of 427755663 in words is "four hundred twenty-seven million, seven hundred fifty-five thousand, six hundred sixty-three".