66036015 has 24 divisors (see below), whose sum is σ = 115521120. Its totient is φ = 34893504.

The previous prime is 66036011. The next prime is 66036017. The reversal of 66036015 is 51063066.

It is not a de Polignac number, because 66036015 - 2² = 66036011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66036015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66036011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1827 + ... + 11636.

It is an arithmetic number, because the mean of its divisors is an integer number (4813380).

Almost surely, 2^66036015 is an apocalyptic number.

66036015 is a deficient number, since it is larger than the sum of its proper divisors (49485105).

66036015 is a wasteful number, since it uses less digits than its factorization.

66036015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13583 (or 13580 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 66036015 is about 8126.2546723568. The cubic root of 66036015 is about 404.1974964024.

The spelling of 66036015 in words is "sixty-six million, thirty-six thousand, fifteen".