65756461 has 2 divisors, whose sum is σ = 65756462. Its totient is φ = 65756460.

The previous prime is 65756419. The next prime is 65756479. The reversal of 65756461 is 16465756.

It is the 3311-st star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 21799561 = 6630^2 + 4669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65756461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65756401) 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 as a sum of consecutive naturals, namely, 32878230 + 32878231.

It is an arithmetic number, because the mean of its divisors is an integer number (32878231).

Almost surely, 2^65756461 is an apocalyptic number.

It is an amenable number.

65756461 is a deficient number, since it is larger than the sum of its proper divisors (1).

65756461 is an equidigital number, since it uses as much as digits as its factorization.

65756461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 65756461 is about 8109.0357626539. The cubic root of 65756461 is about 403.6263189301.

The spelling of 65756461 in words is "sixty-five million, seven hundred fifty-six thousand, four hundred sixty-one".