65477773 has 2 divisors, whose sum is σ = 65477774. Its totient is φ = 65477772.

The previous prime is 65477767. The next prime is 65477801. The reversal of 65477773 is 37777456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65334889 + 142884 = 8083^2 + 378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65477773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65477723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32738886 + 32738887.

It is an arithmetic number, because the mean of its divisors is an integer number (32738887).

Almost surely, 2^65477773 is an apocalyptic number.

It is an amenable number.

65477773 is a deficient number, since it is larger than the sum of its proper divisors (1).

65477773 is an equidigital number, since it uses as much as digits as its factorization.

65477773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864360, while the sum is 46.

The square root of 65477773 is about 8091.8337229580. The cubic root of 65477773 is about 403.0552972290.

The spelling of 65477773 in words is "sixty-five million, four hundred seventy-seven thousand, seven hundred seventy-three".