66027930 has 64 divisors (see below), whose sum is σ = 163202688. Its totient is φ = 17089280.

The previous prime is 66027901. The next prime is 66027931. The reversal of 66027930 is 3972066.

It is a junction number, because it is equal to n+sod(n) for n = 66027891 and 66027900.

It is not an unprimeable number, because it can be changed into a prime (66027931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208132 + ... + 208448.

It is an arithmetic number, because the mean of its divisors is an integer number (2550042).

Almost surely, 2^66027930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66027930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81601344).

66027930 is an abundant number, since it is smaller than the sum of its proper divisors (97174758).

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

66027930 is a wasteful number, since it uses less digits than its factorization.

66027930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 66027930 is about 8125.7571954865. The cubic root of 66027930 is about 404.1809999995.

Adding to 66027930 its reverse (3972066), we get a palindrome (69999996).

The spelling of 66027930 in words is "sixty-six million, twenty-seven thousand, nine hundred thirty".