427666056 has 16 divisors (see below), whose sum is σ = 1069165200. Its totient is φ = 142555344.

The previous prime is 427666033. The next prime is 427666073. The reversal of 427666056 is 650666724.

It is a junction number, because it is equal to n+sod(n) for n = 427665999 and 427666017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8909686 + ... + 8909733.

It is an arithmetic number, because the mean of its divisors is an integer number (66822825).

Almost surely, 2^427666056 is an apocalyptic number.

It is an amenable number.

427666056 is an abundant number, since it is smaller than the sum of its proper divisors (641499144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427666056 is a wasteful number, since it uses less digits than its factorization.

427666056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17819428 (or 17819424 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 427666056 is about 20680.0883943952. The cubic root of 427666056 is about 753.4161531278.

The spelling of 427666056 in words is "four hundred twenty-seven million, six hundred sixty-six thousand, fifty-six".