65121741 has 6 divisors (see below), whose sum is σ = 94064750. Its totient is φ = 43414488.

The previous prime is 65121703. The next prime is 65121769. The reversal of 65121741 is 14712156.

It is a happy number.

65121741 is a `hidden beast` number, since 651 + 2 + 1 + 7 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36542025 + 28579716 = 6045^2 + 5346^2 .

It is not a de Polignac number, because 65121741 - 2⁶ = 65121677 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 (65121701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3617866 + ... + 3617883.

Almost surely, 2^65121741 is an apocalyptic number.

It is an amenable number.

65121741 is a deficient number, since it is larger than the sum of its proper divisors (28943009).

65121741 is a wasteful number, since it uses less digits than its factorization.

65121741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7235755 (or 7235752 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 65121741 is about 8069.8042727194. The cubic root of 65121741 is about 402.3234383712.

Adding to 65121741 its reverse (14712156), we get a palindrome (79833897).

The spelling of 65121741 in words is "sixty-five million, one hundred twenty-one thousand, seven hundred forty-one".