66559230 has 48 divisors (see below), whose sum is σ = 173500704. Its totient is φ = 17703360.

The previous prime is 66559219. The next prime is 66559237. The reversal of 66559230 is 3295566.

66559230 is a `hidden beast` number, since 6 + 65 + 592 + 3 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66559237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48007 + ... + 49373.

It is an arithmetic number, because the mean of its divisors is an integer number (3614598).

Almost surely, 2^66559230 is an apocalyptic number.

66559230 is an abundant number, since it is smaller than the sum of its proper divisors (106941474).

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

66559230 is a wasteful number, since it uses less digits than its factorization.

66559230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1918 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 66559230 is about 8158.3840311670. The cubic root of 66559230 is about 405.2621987561.

It can be divided in two parts, 665 and 59230, that added together give a palindrome (59895).

The spelling of 66559230 in words is "sixty-six million, five hundred fifty-nine thousand, two hundred thirty".