66030930 has 256 divisors, whose sum is σ = 221184000. Its totient is φ = 13970880.

The previous prime is 66030919. The next prime is 66030949. The reversal of 66030930 is 3903066.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 66030894 and 66030903.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2130015 + ... + 2130045.

It is an arithmetic number, because the mean of its divisors is an integer number (864000).

Almost surely, 2^66030930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66030930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110592000).

66030930 is an abundant number, since it is smaller than the sum of its proper divisors (155153070).

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

66030930 is a wasteful number, since it uses less digits than its factorization.

66030930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 66030930 is about 8125.9417915710. The cubic root of 66030930 is about 404.1871212709.

Adding to 66030930 its reverse (3903066), we get a palindrome (69933996).

The spelling of 66030930 in words is "sixty-six million, thirty thousand, nine hundred thirty".