427816686 has 16 divisors (see below), whose sum is σ = 933418368. Its totient is φ = 129641400.

The previous prime is 427816667. The next prime is 427816687. The reversal of 427816686 is 686618724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427816687) 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, 3240970 + ... + 3241101.

It is an arithmetic number, because the mean of its divisors is an integer number (58338648).

Almost surely, 2^427816686 is an apocalyptic number.

427816686 is an abundant number, since it is smaller than the sum of its proper divisors (505601682).

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

427816686 is a wasteful number, since it uses less digits than its factorization.

427816686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482087.

The product of its digits is 774144, while the sum is 48.

The square root of 427816686 is about 20683.7299827666. The cubic root of 427816686 is about 753.5045973335.

The spelling of 427816686 in words is "four hundred twenty-seven million, eight hundred sixteen thousand, six hundred eighty-six".