798641 has 2 divisors, whose sum is σ = 798642. Its totient is φ = 798640.

The previous prime is 798613. The next prime is 798647. The reversal of 798641 is 146897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 758641 + 40000 = 871^2 + 200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-798641 is a prime.

It is not a weakly prime, because it can be changed into another prime (798647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399320 + 399321.

It is an arithmetic number, because the mean of its divisors is an integer number (399321).

2⁷⁹⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

798641 is a deficient number, since it is larger than the sum of its proper divisors (1).

798641 is an equidigital number, since it uses as much as digits as its factorization.

798641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 798641 is about 893.6671639934. The cubic root of 798641 is about 92.7791808851.

The spelling of 798641 in words is "seven hundred ninety-eight thousand, six hundred forty-one".