427920066 has 24 divisors (see below), whose sum is σ = 1059611904. Its totient is φ = 122262840.

The previous prime is 427920061. The next prime is 427920121. The reversal of 427920066 is 660029724.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 427920066.

It is not an unprimeable number, because it can be changed into a prime (427920061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1697970 + ... + 1698221.

It is an arithmetic number, because the mean of its divisors is an integer number (44150496).

Almost surely, 2^427920066 is an apocalyptic number.

427920066 is an abundant number, since it is smaller than the sum of its proper divisors (631691838).

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

427920066 is a wasteful number, since it uses less digits than its factorization.

427920066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396206 (or 3396203 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 427920066 is about 20686.2288975057. The cubic root of 427920066 is about 753.5652861239.

The spelling of 427920066 in words is "four hundred twenty-seven million, nine hundred twenty thousand, sixty-six".