65873669 has 2 divisors, whose sum is σ = 65873670. Its totient is φ = 65873668.

The previous prime is 65873659. The next prime is 65873681. The reversal of 65873669 is 96637856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65820769 + 52900 = 8113^2 + 230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65873669 is a prime.

It is a super-2 number, since 2×65873669² = 8678680535043122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65873659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32936834 + 32936835.

It is an arithmetic number, because the mean of its divisors is an integer number (32936835).

Almost surely, 2^65873669 is an apocalyptic number.

It is an amenable number.

65873669 is a deficient number, since it is larger than the sum of its proper divisors (1).

65873669 is an equidigital number, since it uses as much as digits as its factorization.

65873669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 65873669 is about 8116.2595448889. The cubic root of 65873669 is about 403.8659919720.

The spelling of 65873669 in words is "sixty-five million, eight hundred seventy-three thousand, six hundred sixty-nine".