65944385 has 16 divisors (see below), whose sum is σ = 85451520. Its totient is φ = 48565440.

The previous prime is 65944367. The next prime is 65944393. The reversal of 65944385 is 58344956.

It is not a de Polignac number, because 65944385 - 2⁶ = 65944321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27380 + ... + 29690.

It is an arithmetic number, because the mean of its divisors is an integer number (5340720).

Almost surely, 2^65944385 is an apocalyptic number.

65944385 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65944385 is a deficient number, since it is larger than the sum of its proper divisors (19507135).

65944385 is a wasteful number, since it uses less digits than its factorization.

65944385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768.

The product of its digits is 518400, while the sum is 44.

The square root of 65944385 is about 8120.6148166256. The cubic root of 65944385 is about 404.0104582627.

The spelling of 65944385 in words is "sixty-five million, nine hundred forty-four thousand, three hundred eighty-five".