66254530 has 8 divisors (see below), whose sum is σ = 119258172. Its totient is φ = 26501808.

The previous prime is 66254521. The next prime is 66254557. The reversal of 66254530 is 3545266.

It can be written as a sum of positive squares in 2 ways, for example, as 66080641 + 173889 = 8129^2 + 417^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66254492 and 66254501.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3312717 + ... + 3312736.

Almost surely, 2^66254530 is an apocalyptic number.

66254530 is a deficient number, since it is larger than the sum of its proper divisors (53003642).

66254530 is a wasteful number, since it uses less digits than its factorization.

66254530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625460.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 66254530 is about 8139.6885689810. The cubic root of 66254530 is about 404.6428391107.

Adding to 66254530 its reverse (3545266), we get a palindrome (69799796).

The spelling of 66254530 in words is "sixty-six million, two hundred fifty-four thousand, five hundred thirty".