65985107 has 8 divisors (see below), whose sum is σ = 67063920. Its totient is φ = 64915200.

The previous prime is 65985079. The next prime is 65985163. The reversal of 65985107 is 70158956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65985107 - 2¹⁴ = 65968723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65985407) 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 7 ways as a sum of consecutive naturals, for example, 13607 + ... + 17807.

It is an arithmetic number, because the mean of its divisors is an integer number (8382990).

Almost surely, 2^65985107 is an apocalyptic number.

65985107 is a deficient number, since it is larger than the sum of its proper divisors (1078813).

65985107 is a wasteful number, since it uses less digits than its factorization.

65985107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 65985107 is about 8123.1217521345. The cubic root of 65985107 is about 404.0936027111.

Subtracting 65985107 from its reverse (70158956), we obtain a square (4173849 = 2043²).

The spelling of 65985107 in words is "sixty-five million, nine hundred eighty-five thousand, one hundred seven".