66027730 has 16 divisors (see below), whose sum is σ = 119517120. Its totient is φ = 26262832.

The previous prime is 66027719. The next prime is 66027739. The reversal of 66027730 is 3772066.

It is a super-2 number, since 2×66027730² = 8719322257905800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66027692 and 66027701.

It is not an unprimeable number, because it can be changed into a prime (66027739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16654 + ... + 20233.

It is an arithmetic number, because the mean of its divisors is an integer number (7469820).

Almost surely, 2^66027730 is an apocalyptic number.

66027730 is a deficient number, since it is larger than the sum of its proper divisors (53489390).

66027730 is a wasteful number, since it uses less digits than its factorization.

66027730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37073.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 66027730 is about 8125.7448889317. The cubic root of 66027730 is about 404.1805919081.

Adding to 66027730 its reverse (3772066), we get a palindrome (69799796).

The spelling of 66027730 in words is "sixty-six million, twenty-seven thousand, seven hundred thirty".