65117677 has 2 divisors, whose sum is σ = 65117678. Its totient is φ = 65117676.

The previous prime is 65117659. The next prime is 65117681. The reversal of 65117677 is 77671156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 9853321 = 7434^2 + 3139^2 .

It is a cyclic number.

It is not a de Polignac number, because 65117677 - 2¹⁵ = 65084909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65117627) 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, 32558838 + 32558839.

It is an arithmetic number, because the mean of its divisors is an integer number (32558839).

Almost surely, 2^65117677 is an apocalyptic number.

It is an amenable number.

65117677 is a deficient number, since it is larger than the sum of its proper divisors (1).

65117677 is an equidigital number, since it uses as much as digits as its factorization.

65117677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61740, while the sum is 40.

The square root of 65117677 is about 8069.5524659054. The cubic root of 65117677 is about 402.3150690390.

The spelling of 65117677 in words is "sixty-five million, one hundred seventeen thousand, six hundred seventy-seven".