698090417 has 2 divisors, whose sum is σ = 698090418. Its totient is φ = 698090416.

The previous prime is 698090377. The next prime is 698090441. The reversal of 698090417 is 714090896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423989281 + 274101136 = 20591^2 + 16556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-698090417 is a prime.

It is not a weakly prime, because it can be changed into another prime (698090447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349045208 + 349045209.

It is an arithmetic number, because the mean of its divisors is an integer number (349045209).

Almost surely, 2^698090417 is an apocalyptic number.

It is an amenable number.

698090417 is a deficient number, since it is larger than the sum of its proper divisors (1).

698090417 is an equidigital number, since it uses as much as digits as its factorization.

698090417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 698090417 is about 26421.4007387951. The cubic root of 698090417 is about 887.0958729268.

The spelling of 698090417 in words is "six hundred ninety-eight million, ninety thousand, four hundred seventeen".