798001643 has 2 divisors, whose sum is σ = 798001644. Its totient is φ = 798001642.

The previous prime is 798001639. The next prime is 798001649. The reversal of 798001643 is 346100897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 798001643 - 2² = 798001639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 798001597 and 798001606.

It is not a weakly prime, because it can be changed into another prime (798001649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399000821 + 399000822.

It is an arithmetic number, because the mean of its divisors is an integer number (399000822).

Almost surely, 2^798001643 is an apocalyptic number.

798001643 is a deficient number, since it is larger than the sum of its proper divisors (1).

798001643 is an equidigital number, since it uses as much as digits as its factorization.

798001643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 798001643 is about 28248.9228644209. The cubic root of 798001643 is about 927.5441595935.

The spelling of 798001643 in words is "seven hundred ninety-eight million, one thousand, six hundred forty-three".