66507230 has 16 divisors (see below), whose sum is σ = 126755280. Its totient is φ = 25037952.

The previous prime is 66507229. The next prime is 66507251. The reversal of 66507230 is 3270566.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66507193 and 66507202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195440 + ... + 195779.

It is an arithmetic number, because the mean of its divisors is an integer number (7922205).

Almost surely, 2^66507230 is an apocalyptic number.

66507230 is a deficient number, since it is larger than the sum of its proper divisors (60248050).

66507230 is a wasteful number, since it uses less digits than its factorization.

66507230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391243.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 66507230 is about 8155.1965028441. The cubic root of 66507230 is about 405.1566330081.

Adding to 66507230 its reverse (3270566), we get a palindrome (69777796).

The spelling of 66507230 in words is "sixty-six million, five hundred seven thousand, two hundred thirty".