66011630 has 8 divisors (see below), whose sum is σ = 118820952. Its totient is φ = 26404648.

The previous prime is 66011581. The next prime is 66011639. The reversal of 66011630 is 3611066.

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 = 66011596 and 66011605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66011639) 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 3 ways as a sum of consecutive naturals, for example, 3300572 + ... + 3300591.

It is an arithmetic number, because the mean of its divisors is an integer number (14852619).

Almost surely, 2^66011630 is an apocalyptic number.

66011630 is a deficient number, since it is larger than the sum of its proper divisors (52809322).

66011630 is a wasteful number, since it uses less digits than its factorization.

66011630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6601170.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 66011630 is about 8124.7541501266. The cubic root of 66011630 is about 404.1477378506.

Adding to 66011630 its reverse (3611066), we get a palindrome (69622696).

The spelling of 66011630 in words is "sixty-six million, eleven thousand, six hundred thirty".