427613591 has 2 divisors, whose sum is σ = 427613592. Its totient is φ = 427613590.

The previous prime is 427613581. The next prime is 427613611. The reversal of 427613591 is 195316724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 427613591 - 2¹⁸ = 427351447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427613531) 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, 213806795 + 213806796.

It is an arithmetic number, because the mean of its divisors is an integer number (213806796).

Almost surely, 2^427613591 is an apocalyptic number.

427613591 is a deficient number, since it is larger than the sum of its proper divisors (1).

427613591 is an equidigital number, since it uses as much as digits as its factorization.

427613591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 427613591 is about 20678.8198647795. The cubic root of 427613591 is about 753.3853427994.

The spelling of 427613591 in words is "four hundred twenty-seven million, six hundred thirteen thousand, five hundred ninety-one".