427685818 has 24 divisors (see below), whose sum is σ = 750090132. Its totient is φ = 182355264.

The previous prime is 427685777. The next prime is 427685833. The reversal of 427685818 is 818586724.

It can be written as a sum of positive squares in 2 ways, for example, as 426711649 + 974169 = 20657^2 + 987^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8230 + ... + 30382.

Almost surely, 2^427685818 is an apocalyptic number.

427685818 is a deficient number, since it is larger than the sum of its proper divisors (322404314).

427685818 is a wasteful number, since it uses less digits than its factorization.

427685818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22366 (or 22359 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

The square root of 427685818 is about 20680.5661914755. The cubic root of 427685818 is about 753.4277578059.

The spelling of 427685818 in words is "four hundred twenty-seven million, six hundred eighty-five thousand, eight hundred eighteen".