873666653 has 2 divisors, whose sum is σ = 873666654. Its totient is φ = 873666652.

The previous prime is 873666643. The next prime is 873666709. The reversal of 873666653 is 356666378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862127044 + 11539609 = 29362^2 + 3397^2 .

It is a cyclic number.

It is not a de Polignac number, because 873666653 - 2¹⁴ = 873650269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873666613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436833326 + 436833327.

It is an arithmetic number, because the mean of its divisors is an integer number (436833327).

Almost surely, 2^873666653 is an apocalyptic number.

It is an amenable number.

873666653 is a deficient number, since it is larger than the sum of its proper divisors (1).

873666653 is an equidigital number, since it uses as much as digits as its factorization.

873666653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The square root of 873666653 is about 29557.8526452785. The cubic root of 873666653 is about 955.9795156322.

The spelling of 873666653 in words is "eight hundred seventy-three million, six hundred sixty-six thousand, six hundred fifty-three".