66253230 has 24 divisors (see below), whose sum is σ = 172258632. Its totient is φ = 17667504.

The previous prime is 66253219. The next prime is 66253237. The reversal of 66253230 is 3235266.

66253230 is a `hidden beast` number, since 6 + 625 + 3 + 2 + 30 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66253194 and 66253203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66253237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367984 + ... + 368163.

It is an arithmetic number, because the mean of its divisors is an integer number (7177443).

Almost surely, 2^66253230 is an apocalyptic number.

66253230 is an abundant number, since it is smaller than the sum of its proper divisors (106005402).

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

66253230 is a wasteful number, since it uses less digits than its factorization.

66253230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736160 (or 736157 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 66253230 is about 8139.6087129542. The cubic root of 66253230 is about 404.6401925539.

Adding to 66253230 its reverse (3235266), we get a palindrome (69488496).

The spelling of 66253230 in words is "sixty-six million, two hundred fifty-three thousand, two hundred thirty".