798407681 has 2 divisors, whose sum is σ = 798407682. Its totient is φ = 798407680.

The previous prime is 798407677. The next prime is 798407761. The reversal of 798407681 is 186704897.

798407681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796142656 + 2265025 = 28216^2 + 1505^2 .

It is a cyclic number.

It is not a de Polignac number, because 798407681 - 2² = 798407677 is a prime.

It is a super-2 number, since 2×798407681² = 1274909650159595522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (798407081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399203840 + 399203841.

It is an arithmetic number, because the mean of its divisors is an integer number (399203841).

Almost surely, 2^798407681 is an apocalyptic number.

It is an amenable number.

798407681 is a deficient number, since it is larger than the sum of its proper divisors (1).

798407681 is an equidigital number, since it uses as much as digits as its factorization.

798407681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 798407681 is about 28256.1087377579. The cubic root of 798407681 is about 927.7014501288.

The spelling of 798407681 in words is "seven hundred ninety-eight million, four hundred seven thousand, six hundred eighty-one".