66731030 has 16 divisors (see below), whose sum is σ = 124258320. Its totient is φ = 25771872.

The previous prime is 66731009. The next prime is 66731039. The reversal of 66731030 is 3013766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66731039) 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, 114764 + ... + 115343.

It is an arithmetic number, because the mean of its divisors is an integer number (7766145).

Almost surely, 2^66731030 is an apocalyptic number.

66731030 is a deficient number, since it is larger than the sum of its proper divisors (57527290).

66731030 is a wasteful number, since it uses less digits than its factorization.

66731030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230143.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 66731030 is about 8168.9062915423. The cubic root of 66731030 is about 405.6105813316.

Adding to 66731030 its reverse (3013766), we get a palindrome (69744796).

The spelling of 66731030 in words is "sixty-six million, seven hundred thirty-one thousand, thirty".