66710325 has 36 divisors (see below), whose sum is σ = 121249184. Its totient is φ = 32340000.

The previous prime is 66710323. The next prime is 66710333. The reversal of 66710325 is 52301766.

It is not a de Polignac number, because 66710325 - 2¹ = 66710323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66710292 and 66710301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66710323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5400 + ... + 12750.

Almost surely, 2^66710325 is an apocalyptic number.

It is an amenable number.

66710325 is a deficient number, since it is larger than the sum of its proper divisors (54538859).

66710325 is a wasteful number, since it uses less digits than its factorization.

66710325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7386 (or 7370 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 66710325 is about 8167.6388877080. The cubic root of 66710325 is about 405.5686266577.

The spelling of 66710325 in words is "sixty-six million, seven hundred ten thousand, three hundred twenty-five".