66000513 has 8 divisors (see below), whose sum is σ = 88319488. Its totient is φ = 43840944.

The previous prime is 66000499. The next prime is 66000523. The reversal of 66000513 is 31500066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66000513 - 2⁴ = 66000497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66000513.

It is not an unprimeable number, because it can be changed into a prime (66000523) 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, 38881 + ... + 40542.

It is an arithmetic number, because the mean of its divisors is an integer number (11039936).

Almost surely, 2^66000513 is an apocalyptic number.

It is an amenable number.

66000513 is a deficient number, since it is larger than the sum of its proper divisors (22318975).

66000513 is a wasteful number, since it uses less digits than its factorization.

66000513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79703.

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

The square root of 66000513 is about 8124.0699775420. The cubic root of 66000513 is about 404.1250491081.

Adding to 66000513 its reverse (31500066), we get a palindrome (97500579).

The spelling of 66000513 in words is "sixty-six million, five hundred thirteen", and thus it is an aban number.