63421427 has 2 divisors, whose sum is σ = 63421428. Its totient is φ = 63421426.

The previous prime is 63421417. The next prime is 63421433. The reversal of 63421427 is 72412436.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63421427 - 2¹⁰ = 63420403 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63421427.

It is not a weakly prime, because it can be changed into another prime (63421417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31710713 + 31710714.

It is an arithmetic number, because the mean of its divisors is an integer number (31710714).

Almost surely, 2^63421427 is an apocalyptic number.

63421427 is a deficient number, since it is larger than the sum of its proper divisors (1).

63421427 is an equidigital number, since it uses as much as digits as its factorization.

63421427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 63421427 is about 7963.7570907204. The cubic root of 63421427 is about 398.7909889960.

The spelling of 63421427 in words is "sixty-three million, four hundred twenty-one thousand, four hundred twenty-seven".