798740641 has 2 divisors, whose sum is σ = 798740642. Its totient is φ = 798740640.

The previous prime is 798740617. The next prime is 798740647. The reversal of 798740641 is 146047897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795240000 + 3500641 = 28200^2 + 1871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-798740641 is a prime.

It is a super-2 number, since 2×798740641² = 1275973223170181762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 798740591 and 798740600.

It is not a weakly prime, because it can be changed into another prime (798740647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399370320 + 399370321.

It is an arithmetic number, because the mean of its divisors is an integer number (399370321).

Almost surely, 2^798740641 is an apocalyptic number.

It is an amenable number.

798740641 is a deficient number, since it is larger than the sum of its proper divisors (1).

798740641 is an equidigital number, since it uses as much as digits as its factorization.

798740641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 798740641 is about 28261.9999469252. Note that the first 4 decimals coincide. The cubic root of 798740641 is about 927.8303920021.

The spelling of 798740641 in words is "seven hundred ninety-eight million, seven hundred forty thousand, six hundred forty-one".