426572666 has 16 divisors (see below), whose sum is σ = 697804800. Its totient is φ = 194386608.

The previous prime is 426572647. The next prime is 426572669. The reversal of 426572666 is 666275624.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (426572669) 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, 101786 + ... + 105893.

It is an arithmetic number, because the mean of its divisors is an integer number (43612800).

Almost surely, 2^426572666 is an apocalyptic number.

426572666 is a deficient number, since it is larger than the sum of its proper divisors (271232134).

426572666 is a wasteful number, since it uses less digits than its factorization.

426572666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207773.

The product of its digits is 725760, while the sum is 44.

The square root of 426572666 is about 20653.6356605804. The cubic root of 426572666 is about 752.7735327854.

The spelling of 426572666 in words is "four hundred twenty-six million, five hundred seventy-two thousand, six hundred sixty-six".