66965349 has 16 divisors (see below), whose sum is σ = 98303040. Its totient is φ = 40210560.

The previous prime is 66965333. The next prime is 66965357. The reversal of 66965349 is 94356966.

It is a happy number.

It is not a de Polignac number, because 66965349 - 2⁴ = 66965333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66965298 and 66965307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66965399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5712 + ... + 12905.

It is an arithmetic number, because the mean of its divisors is an integer number (6143940).

Almost surely, 2^66965349 is an apocalyptic number.

It is an amenable number.

66965349 is a deficient number, since it is larger than the sum of its proper divisors (31337691).

66965349 is a wasteful number, since it uses less digits than its factorization.

66965349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18740.

The product of its digits is 1049760, while the sum is 48.

The square root of 66965349 is about 8183.2358514221. The cubic root of 66965349 is about 406.0847797101.

The spelling of 66965349 in words is "sixty-six million, nine hundred sixty-five thousand, three hundred forty-nine".