66340365 has 96 divisors (see below), whose sum is σ = 136515456. Its totient is φ = 27256320.

The previous prime is 66340327. The next prime is 66340387. The reversal of 66340365 is 56304366.

It is a happy number.

66340365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66340365 - 2¹⁰ = 66339341 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 506350 + ... + 506480.

It is an arithmetic number, because the mean of its divisors is an integer number (1422036).

Almost surely, 2^66340365 is an apocalyptic number.

66340365 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66340365 is an abundant number, since it is smaller than the sum of its proper divisors (70175091).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66340365 is a wasteful number, since it uses less digits than its factorization.

66340365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 66340365 is about 8144.9594842455. The cubic root of 66340365 is about 404.8175065628.

The spelling of 66340365 in words is "sixty-six million, three hundred forty thousand, three hundred sixty-five".