66120315 has 16 divisors (see below), whose sum is σ = 106260000. Its totient is φ = 35108352.

The previous prime is 66120289. The next prime is 66120317. The reversal of 66120315 is 51302166.

It is not a de Polignac number, because 66120315 - 2⁶ = 66120251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66120317) 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 15 ways as a sum of consecutive naturals, for example, 6190 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (6641250).

Almost surely, 2^66120315 is an apocalyptic number.

66120315 is a deficient number, since it is larger than the sum of its proper divisors (40139685).

66120315 is a wasteful number, since it uses less digits than its factorization.

66120315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19486.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 66120315 is about 8131.4399093887. The cubic root of 66120315 is about 404.3694195564.

The spelling of 66120315 in words is "sixty-six million, one hundred twenty thousand, three hundred fifteen".