66325313 has 8 divisors (see below), whose sum is σ = 71552808. Its totient is φ = 61245184.

The previous prime is 66325309. The next prime is 66325321. The reversal of 66325313 is 31352366.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26091664 + 40233649 = 5108^2 + 6343^2 .

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 66325313 - 2² = 66325309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66325373) 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, 35906 + ... + 37707.

It is an arithmetic number, because the mean of its divisors is an integer number (8944101).

Almost surely, 2^66325313 is an apocalyptic number.

It is an amenable number.

66325313 is a deficient number, since it is larger than the sum of its proper divisors (5227495).

66325313 is a wasteful number, since it uses less digits than its factorization.

66325313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73683.

The product of its digits is 9720, while the sum is 29.

The square root of 66325313 is about 8144.0354247756. The cubic root of 66325313 is about 404.7868878286.

Adding to 66325313 its reverse (31352366), we get a palindrome (97677679).

The spelling of 66325313 in words is "sixty-six million, three hundred twenty-five thousand, three hundred thirteen".