853208761 has 2 divisors, whose sum is σ = 853208762. Its totient is φ = 853208760.

The previous prime is 853208731. The next prime is 853208771. The reversal of 853208761 is 167802358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 695957161 + 157251600 = 26381^2 + 12540^2 .

It is a cyclic number.

It is not a de Polignac number, because 853208761 - 2¹⁷ = 853077689 is a prime.

It is equal to p_43737754 and since 853208761 and 43737754 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (853208731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426604380 + 426604381.

It is an arithmetic number, because the mean of its divisors is an integer number (426604381).

Almost surely, 2^853208761 is an apocalyptic number.

It is an amenable number.

853208761 is a deficient number, since it is larger than the sum of its proper divisors (1).

853208761 is an equidigital number, since it uses as much as digits as its factorization.

853208761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 853208761 is about 29209.7374346296. The cubic root of 853208761 is about 948.4587236910.

The spelling of 853208761 in words is "eight hundred fifty-three million, two hundred eight thousand, seven hundred sixty-one".