427616427 has 8 divisors (see below), whose sum is σ = 651606016. Its totient is φ = 244352232.

The previous prime is 427616393. The next prime is 427616443. The reversal of 427616427 is 724616724.

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

It is not a de Polignac number, because 427616427 - 2²⁰ = 426567851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427616027) 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, 10181323 + ... + 10181364.

It is an arithmetic number, because the mean of its divisors is an integer number (81450752).

Almost surely, 2^427616427 is an apocalyptic number.

427616427 is a deficient number, since it is larger than the sum of its proper divisors (223989589).

427616427 is a wasteful number, since it uses less digits than its factorization.

427616427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20362697.

The product of its digits is 112896, while the sum is 39.

The square root of 427616427 is about 20678.8884372444. Note that the first 3 decimals coincide. The cubic root of 427616427 is about 753.3870083187.

The spelling of 427616427 in words is "four hundred twenty-seven million, six hundred sixteen thousand, four hundred twenty-seven".