66732369 has 16 divisors (see below), whose sum is σ = 97977600. Its totient is φ = 40063760.

The previous prime is 66732343. The next prime is 66732383. The reversal of 66732369 is 96323766.

66732369 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 66732369 - 2⁷ = 66732241 is a prime.

It is a super-2 number, since 2×66732369² = 8906418144704322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66732369.

It is not an unprimeable number, because it can be changed into a prime (66732319) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5919 + ... + 12980.

It is an arithmetic number, because the mean of its divisors is an integer number (6123600).

Almost surely, 2^66732369 is an apocalyptic number.

It is an amenable number.

66732369 is a deficient number, since it is larger than the sum of its proper divisors (31245231).

66732369 is a wasteful number, since it uses less digits than its factorization.

66732369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19020.

The product of its digits is 244944, while the sum is 42.

The square root of 66732369 is about 8168.9882482471. The cubic root of 66732369 is about 405.6132942571.

The spelling of 66732369 in words is "sixty-six million, seven hundred thirty-two thousand, three hundred sixty-nine".