427685817 has 16 divisors (see below), whose sum is σ = 617035328. Its totient is φ = 261938880.

The previous prime is 427685777. The next prime is 427685833. The reversal of 427685817 is 718586724.

It is not a de Polignac number, because 427685817 - 2¹¹ = 427683769 is a prime.

It is a super-3 number, since 3×427685817³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (427685837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17758 + ... + 34215.

It is an arithmetic number, because the mean of its divisors is an integer number (38564708).

Almost surely, 2^427685817 is an apocalyptic number.

It is an amenable number.

427685817 is a deficient number, since it is larger than the sum of its proper divisors (189349511).

427685817 is a wasteful number, since it uses less digits than its factorization.

427685817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52200.

The product of its digits is 752640, while the sum is 48.

The square root of 427685817 is about 20680.5661672982. The cubic root of 427685817 is about 753.4277572187.

The spelling of 427685817 in words is "four hundred twenty-seven million, six hundred eighty-five thousand, eight hundred seventeen".