427777806 has 8 divisors (see below), whose sum is σ = 855555624. Its totient is φ = 142592600.

The previous prime is 427777771. The next prime is 427777807. The reversal of 427777806 is 608777724.

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

427777806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427777807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35648145 + ... + 35648156.

It is an arithmetic number, because the mean of its divisors is an integer number (106944453).

Almost surely, 2^427777806 is an apocalyptic number.

427777806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

427777806 is a wasteful number, since it uses less digits than its factorization.

427777806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71296306.

The product of its (nonzero) digits is 921984, while the sum is 48.

The square root of 427777806 is about 20682.7900922482. The cubic root of 427777806 is about 753.4817704645.

The spelling of 427777806 in words is "four hundred twenty-seven million, seven hundred seventy-seven thousand, eight hundred six".