427768727 has 2 divisors, whose sum is σ = 427768728. Its totient is φ = 427768726.

The previous prime is 427768657. The next prime is 427768741. The reversal of 427768727 is 727867724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427768727 - 2¹⁴ = 427752343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427768787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213884363 + 213884364.

It is an arithmetic number, because the mean of its divisors is an integer number (213884364).

Almost surely, 2^427768727 is an apocalyptic number.

427768727 is a deficient number, since it is larger than the sum of its proper divisors (1).

427768727 is an equidigital number, since it uses as much as digits as its factorization.

427768727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1843968, while the sum is 50.

The square root of 427768727 is about 20682.5706090902. The cubic root of 427768727 is about 753.4764398862.

The spelling of 427768727 in words is "four hundred twenty-seven million, seven hundred sixty-eight thousand, seven hundred twenty-seven".