66134715 has 16 divisors (see below), whose sum is σ = 107266848. Its totient is φ = 34788096.

The previous prime is 66134713. The next prime is 66134737. The reversal of 66134715 is 51743166.

It is not a de Polignac number, because 66134715 - 2¹ = 66134713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66134711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29104 + ... + 31293.

It is an arithmetic number, because the mean of its divisors is an integer number (6704178).

Almost surely, 2^66134715 is an apocalyptic number.

66134715 is a deficient number, since it is larger than the sum of its proper divisors (41132133).

66134715 is a wasteful number, since it uses less digits than its factorization.

66134715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60478.

The product of its digits is 15120, while the sum is 33.

The square root of 66134715 is about 8132.3253132176. The cubic root of 66134715 is about 404.3987725976.

The spelling of 66134715 in words is "sixty-six million, one hundred thirty-four thousand, seven hundred fifteen".