66373365 has 32 divisors (see below), whose sum is σ = 112250880. Its totient is φ = 33397056.

The previous prime is 66373339. The next prime is 66373367. The reversal of 66373365 is 56337366.

It is not a de Polignac number, because 66373365 - 2¹⁴ = 66356981 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66373367) 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 31 ways as a sum of consecutive naturals, for example, 131704 + ... + 132206.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^66373365 is an apocalyptic number.

It is an amenable number.

66373365 is a deficient number, since it is larger than the sum of its proper divisors (45877515).

66373365 is a wasteful number, since it uses less digits than its factorization.

66373365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

The product of its digits is 204120, while the sum is 39.

The square root of 66373365 is about 8146.9850251489. The cubic root of 66373365 is about 404.8846188619.

The spelling of 66373365 in words is "sixty-six million, three hundred seventy-three thousand, three hundred sixty-five".