66325573 has 8 divisors (see below), whose sum is σ = 67417920. Its totient is φ = 65237760.

The previous prime is 66325513. The next prime is 66325579. The reversal of 66325573 is 37552366.

It is a happy number.

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-66325573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66325579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40158 + ... + 41776.

It is an arithmetic number, because the mean of its divisors is an integer number (8427240).

Almost surely, 2^66325573 is an apocalyptic number.

It is an amenable number.

66325573 is a deficient number, since it is larger than the sum of its proper divisors (1092347).

66325573 is a wasteful number, since it uses less digits than its factorization.

66325573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267.

The product of its digits is 113400, while the sum is 37.

The square root of 66325573 is about 8144.0513873624. The cubic root of 66325573 is about 404.7874167592.

The spelling of 66325573 in words is "sixty-six million, three hundred twenty-five thousand, five hundred seventy-three".