66261532 has 12 divisors (see below), whose sum is σ = 116559856. Its totient is φ = 32958720.

The previous prime is 66261523. The next prime is 66261553. The reversal of 66261532 is 23516266.

66261532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 66261494 and 66261503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42144 + ... + 43687.

Almost surely, 2^66261532 is an apocalyptic number.

It is an amenable number.

66261532 is a deficient number, since it is larger than the sum of its proper divisors (50298324).

66261532 is a wasteful number, since it uses less digits than its factorization.

66261532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86028 (or 86026 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 66261532 is about 8140.1186723536. The cubic root of 66261532 is about 404.6570932775.

Adding to 66261532 its reverse (23516266), we get a palindrome (89777798).

The spelling of 66261532 in words is "sixty-six million, two hundred sixty-one thousand, five hundred thirty-two".