773135681 has 2 divisors, whose sum is σ = 773135682. Its totient is φ = 773135680.

The previous prime is 773135663. The next prime is 773135719. The reversal of 773135681 is 186531377.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393665281 + 379470400 = 19841^2 + 19480^2 .

It is a cyclic number.

It is not a de Polignac number, because 773135681 - 2¹⁸ = 772873537 is a prime.

It is a super-2 number, since 2×773135681² = 1195477562470667522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (773135281) 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, 386567840 + 386567841.

It is an arithmetic number, because the mean of its divisors is an integer number (386567841).

Almost surely, 2^773135681 is an apocalyptic number.

It is an amenable number.

773135681 is a deficient number, since it is larger than the sum of its proper divisors (1).

773135681 is an equidigital number, since it uses as much as digits as its factorization.

773135681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 773135681 is about 27805.3174950404. The cubic root of 773135681 is about 917.8081410730.

The spelling of 773135681 in words is "seven hundred seventy-three million, one hundred thirty-five thousand, six hundred eighty-one".