427663771 has 8 divisors (see below), whose sum is σ = 446654880. Its totient is φ = 408705792.

The previous prime is 427663751. The next prime is 427663777. The reversal of 427663771 is 177366724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 427663771 - 2⁵ = 427663739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427663777) 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 in 7 ways as a sum of consecutive naturals, for example, 20235 + ... + 35563.

It is an arithmetic number, because the mean of its divisors is an integer number (55831860).

Almost surely, 2^427663771 is an apocalyptic number.

427663771 is a deficient number, since it is larger than the sum of its proper divisors (18991109).

427663771 is a wasteful number, since it uses less digits than its factorization.

427663771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16565.

The product of its digits is 296352, while the sum is 43.

The square root of 427663771 is about 20680.0331479425. The cubic root of 427663771 is about 753.4148113029.

The spelling of 427663771 in words is "four hundred twenty-seven million, six hundred sixty-three thousand, seven hundred seventy-one".