66125923 has 8 divisors (see below), whose sum is σ = 67297280. Its totient is φ = 64963080.

The previous prime is 66125911. The next prime is 66125929. The reversal of 66125923 is 32952166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66125923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66125929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14686 + ... + 18652.

It is an arithmetic number, because the mean of its divisors is an integer number (8412160).

Almost surely, 2^66125923 is an apocalyptic number.

66125923 is a deficient number, since it is larger than the sum of its proper divisors (1171357).

66125923 is a wasteful number, since it uses less digits than its factorization.

66125923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257.

The product of its digits is 19440, while the sum is 34.

The square root of 66125923 is about 8131.7847364524. The cubic root of 66125923 is about 404.3808514419.

The spelling of 66125923 in words is "sixty-six million, one hundred twenty-five thousand, nine hundred twenty-three".