698824849 has 2 divisors, whose sum is σ = 698824850. Its totient is φ = 698824848.

The previous prime is 698824823. The next prime is 698824859. The reversal of 698824849 is 948428896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560174224 + 138650625 = 23668^2 + 11775^2 .

It is a cyclic number.

It is not a de Polignac number, because 698824849 - 2⁵ = 698824817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 698824793 and 698824802.

It is not a weakly prime, because it can be changed into another prime (698824859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349412424 + 349412425.

It is an arithmetic number, because the mean of its divisors is an integer number (349412425).

Almost surely, 2^698824849 is an apocalyptic number.

It is an amenable number.

698824849 is a deficient number, since it is larger than the sum of its proper divisors (1).

698824849 is an equidigital number, since it uses as much as digits as its factorization.

698824849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 58.

The square root of 698824849 is about 26435.2955156548. The cubic root of 698824849 is about 887.4068561641.

The spelling of 698824849 in words is "six hundred ninety-eight million, eight hundred twenty-four thousand, eight hundred forty-nine".