66532313 has 8 divisors (see below), whose sum is σ = 67032000. Its totient is φ = 66035088.

The previous prime is 66532289. The next prime is 66532337. The reversal of 66532313 is 31323566.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66532289) and next prime (66532337).

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-66532313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66532363) 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, 132020 + ... + 132522.

It is an arithmetic number, because the mean of its divisors is an integer number (8379000).

Almost surely, 2^66532313 is an apocalyptic number.

It is an amenable number.

66532313 is a deficient number, since it is larger than the sum of its proper divisors (499687).

66532313 is a wasteful number, since it uses less digits than its factorization.

66532313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

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

The square root of 66532313 is about 8156.7342116806. The cubic root of 66532313 is about 405.2075611378.

Adding to 66532313 its reverse (31323566), we get a palindrome (97855879).

The spelling of 66532313 in words is "sixty-six million, five hundred thirty-two thousand, three hundred thirteen".