66130500 has 48 divisors (see below), whose sum is σ = 192576384. Its totient is φ = 17634400.

The previous prime is 66130489. The next prime is 66130511. The reversal of 66130500 is 503166.

It is an interprime number because it is at equal distance from previous prime (66130489) and next prime (66130511).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20544 + ... + 23543.

It is an arithmetic number, because the mean of its divisors is an integer number (4012008).

Almost surely, 2^66130500 is an apocalyptic number.

66130500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66130500 is an abundant number, since it is smaller than the sum of its proper divisors (126445884).

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

66130500 is a wasteful number, since it uses less digits than its factorization.

66130500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44109 (or 44097 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 66130500 is about 8132.0661581175. The cubic root of 66130500 is about 404.3901811589.

Adding to 66130500 its reverse (503166), we get a palindrome (66633666).

The spelling of 66130500 in words is "sixty-six million, one hundred thirty thousand, five hundred".