66125713 has 8 divisors (see below), whose sum is σ = 71380800. Its totient is φ = 61069008.

The previous prime is 66125707. The next prime is 66125749. The reversal of 66125713 is 31752166.

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

It is a cyclic number.

It is not a de Polignac number, because 66125713 - 2¹³ = 66117521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66125783) 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 7 ways as a sum of consecutive naturals, for example, 48903 + ... + 50236.

It is an arithmetic number, because the mean of its divisors is an integer number (8922600).

Almost surely, 2^66125713 is an apocalyptic number.

It is an amenable number.

66125713 is a deficient number, since it is larger than the sum of its proper divisors (5255087).

66125713 is a wasteful number, since it uses less digits than its factorization.

66125713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99191.

The product of its digits is 7560, while the sum is 31.

The square root of 66125713 is about 8131.7718241476. The cubic root of 66125713 is about 404.3804233693.

Adding to 66125713 its reverse (31752166), we get a palindrome (97877879).

The spelling of 66125713 in words is "sixty-six million, one hundred twenty-five thousand, seven hundred thirteen".