66567313 has 16 divisors (see below), whose sum is σ = 72205056. Its totient is φ = 61205760.

The previous prime is 66567307. The next prime is 66567331. The reversal of 66567313 is 31376566.

It is a de Polignac number, because none of the positive numbers 2^k-66567313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66567343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68356 + ... + 69322.

It is an arithmetic number, because the mean of its divisors is an integer number (4512816).

Almost surely, 2^66567313 is an apocalyptic number.

It is an amenable number.

66567313 is a deficient number, since it is larger than the sum of its proper divisors (5637743).

66567313 is a wasteful number, since it uses less digits than its factorization.

66567313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104.

The product of its digits is 68040, while the sum is 37.

The square root of 66567313 is about 8158.8793960936. The cubic root of 66567313 is about 405.2786032015.

The spelling of 66567313 in words is "sixty-six million, five hundred sixty-seven thousand, three hundred thirteen".