66032630 has 32 divisors (see below), whose sum is σ = 120881376. Its totient is φ = 25968384.

The previous prime is 66032621. The next prime is 66032633. The reversal of 66032630 is 3623066.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66032630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66032633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214937 + ... + 215243.

It is an arithmetic number, because the mean of its divisors is an integer number (3777543).

Almost surely, 2^66032630 is an apocalyptic number.

66032630 is a deficient number, since it is larger than the sum of its proper divisors (54848746).

66032630 is a wasteful number, since it uses less digits than its factorization.

66032630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 66032630 is about 8126.0463941575. The cubic root of 66032630 is about 404.1905899090.

Adding to 66032630 its reverse (3623066), we get a palindrome (69655696).

The spelling of 66032630 in words is "sixty-six million, thirty-two thousand, six hundred thirty".