763081861 has 2 divisors, whose sum is σ = 763081862. Its totient is φ = 763081860.

The previous prime is 763081853. The next prime is 763081867. The reversal of 763081861 is 168180367.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 692689761 + 70392100 = 26319^2 + 8390^2 .

It is a cyclic number.

It is not a de Polignac number, because 763081861 - 2³ = 763081853 is a prime.

It is a super-3 number, since 3×763081861³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (763081867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381540930 + 381540931.

It is an arithmetic number, because the mean of its divisors is an integer number (381540931).

Almost surely, 2^763081861 is an apocalyptic number.

It is an amenable number.

763081861 is a deficient number, since it is larger than the sum of its proper divisors (1).

763081861 is an equidigital number, since it uses as much as digits as its factorization.

763081861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 763081861 is about 27623.9363777142. The cubic root of 763081861 is about 913.8123925650.

The spelling of 763081861 in words is "seven hundred sixty-three million, eighty-one thousand, eight hundred sixty-one".