427685819 has 8 divisors (see below), whose sum is σ = 466717440. Its totient is φ = 388679400.

The previous prime is 427685777. The next prime is 427685833. The reversal of 427685819 is 918586724.

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

It is a cyclic number.

It is not a de Polignac number, because 427685819 - 2⁸ = 427685563 is a prime.

It is a super-2 number, since 2×427685819² = 365830319547401522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427685879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56162 + ... + 63320.

It is an arithmetic number, because the mean of its divisors is an integer number (58339680).

Almost surely, 2^427685819 is an apocalyptic number.

427685819 is a deficient number, since it is larger than the sum of its proper divisors (39031621).

427685819 is a wasteful number, since it uses less digits than its factorization.

427685819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12601.

The product of its digits is 967680, while the sum is 50.

The square root of 427685819 is about 20680.5662156528. The cubic root of 427685819 is about 753.4277583931.

The spelling of 427685819 in words is "four hundred twenty-seven million, six hundred eighty-five thousand, eight hundred nineteen".