65774669 has 2 divisors, whose sum is σ = 65774670. Its totient is φ = 65774668.

The previous prime is 65774627. The next prime is 65774671. The reversal of 65774669 is 96647756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39375625 + 26399044 = 6275^2 + 5138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65774669 is a prime.

It is a super-2 number, since 2×65774669² = 8652614164119122, which contains 22 as substring.

Together with 65774671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65774699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32887334 + 32887335.

It is an arithmetic number, because the mean of its divisors is an integer number (32887335).

Almost surely, 2^65774669 is an apocalyptic number.

It is an amenable number.

65774669 is a deficient number, since it is larger than the sum of its proper divisors (1).

65774669 is an equidigital number, since it uses as much as digits as its factorization.

65774669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 50.

The square root of 65774669 is about 8110.1583831637. The cubic root of 65774669 is about 403.6635702748.

The spelling of 65774669 in words is "sixty-five million, seven hundred seventy-four thousand, six hundred sixty-nine".