427780066 has 16 divisors (see below), whose sum is σ = 747175104. Its totient is φ = 179874864.

The previous prime is 427780063. The next prime is 427780081. The reversal of 427780066 is 660087724.

It is not an unprimeable number, because it can be changed into a prime (427780063) 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 7 ways as a sum of consecutive naturals, for example, 287520 + ... + 289003.

It is an arithmetic number, because the mean of its divisors is an integer number (46698444).

Almost surely, 2^427780066 is an apocalyptic number.

427780066 is a deficient number, since it is larger than the sum of its proper divisors (319395038).

427780066 is a wasteful number, since it uses less digits than its factorization.

427780066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576585.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 427780066 is about 20682.8447269712. The cubic root of 427780066 is about 753.4830973729.

The spelling of 427780066 in words is "four hundred twenty-seven million, seven hundred eighty thousand, sixty-six".