427766017 has 4 divisors (see below), whose sum is σ = 488875456. Its totient is φ = 366656580.

The previous prime is 427765999. The next prime is 427766033. The reversal of 427766017 is 710667724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427766017 - 2¹⁹ = 427241729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427766047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30554709 + ... + 30554722.

It is an arithmetic number, because the mean of its divisors is an integer number (122218864).

Almost surely, 2^427766017 is an apocalyptic number.

It is an amenable number.

427766017 is a deficient number, since it is larger than the sum of its proper divisors (61109439).

427766017 is an equidigital number, since it uses as much as digits as its factorization.

427766017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61109438.

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 427766017 is about 20682.5050948864. The cubic root of 427766017 is about 753.4748487417.

The spelling of 427766017 in words is "four hundred twenty-seven million, seven hundred sixty-six thousand, seventeen".