65949775 has 12 divisors (see below), whose sum is σ = 83000392. Its totient is φ = 51971040.

The previous prime is 65949773. The next prime is 65949791. The reversal of 65949775 is 57794956.

It is a happy number.

It is not a de Polignac number, because 65949775 - 2¹ = 65949773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65949773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18012 + ... + 21361.

Almost surely, 2^65949775 is an apocalyptic number.

65949775 is a deficient number, since it is larger than the sum of its proper divisors (17050617).

65949775 is a wasteful number, since it uses less digits than its factorization.

65949775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39450 (or 39445 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 52.

The square root of 65949775 is about 8120.9466812681. The cubic root of 65949775 is about 404.0214653007.

The spelling of 65949775 in words is "sixty-five million, nine hundred forty-nine thousand, seven hundred seventy-five".