66908325 has 24 divisors (see below), whose sum is σ = 120679776. Its totient is φ = 32440000.

The previous prime is 66908287. The next prime is 66908363. The reversal of 66908325 is 52380966.

It is an interprime number because it is at equal distance from previous prime (66908287) and next prime (66908363).

It is not a de Polignac number, because 66908325 - 2¹³ = 66900133 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39726 + ... + 41375.

It is an arithmetic number, because the mean of its divisors is an integer number (5028324).

Almost surely, 2^66908325 is an apocalyptic number.

It is an amenable number.

66908325 is a deficient number, since it is larger than the sum of its proper divisors (53771451).

66908325 is a wasteful number, since it uses less digits than its factorization.

66908325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81125 (or 81120 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 66908325 is about 8179.7509130780. The cubic root of 66908325 is about 405.9694805049.

The spelling of 66908325 in words is "sixty-six million, nine hundred eight thousand, three hundred twenty-five".