66151632 has 40 divisors (see below), whose sum is σ = 174122784. Its totient is φ = 21633664.

The previous prime is 66151627. The next prime is 66151643. The reversal of 66151632 is 23615166.

66151632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 66151632.

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 7 ways as a sum of consecutive naturals, for example, 10458 + ... + 15545.

Almost surely, 2^66151632 is an apocalyptic number.

It is an amenable number.

66151632 is an abundant number, since it is smaller than the sum of its proper divisors (107971152).

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

66151632 is a wasteful number, since it uses less digits than its factorization.

66151632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26067 (or 26061 counting only the distinct ones).

The product of its digits is 6480, while the sum is 30.

The square root of 66151632 is about 8133.3653551282. The cubic root of 66151632 is about 404.4332508631.

Adding to 66151632 its reverse (23615166), we get a palindrome (89766798).

The spelling of 66151632 in words is "sixty-six million, one hundred fifty-one thousand, six hundred thirty-two".