698098025 has 6 divisors (see below), whose sum is σ = 865641582. Its totient is φ = 558478400.

The previous prime is 698097941. The next prime is 698098073. The reversal of 698098025 is 520890896.

It can be written as a sum of positive squares in 3 ways, for example, as 57805609 + 640292416 = 7603^2 + 25304^2 .

It is a de Polignac number, because none of the positive numbers 2^k-698098025 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 13961936 + ... + 13961985.

It is an arithmetic number, because the mean of its divisors is an integer number (144273597).

Almost surely, 2^698098025 is an apocalyptic number.

It is an amenable number.

698098025 is a deficient number, since it is larger than the sum of its proper divisors (167543557).

698098025 is a wasteful number, since it uses less digits than its factorization.

698098025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27923931 (or 27923926 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 698098025 is about 26421.5447126015. The cubic root of 698098025 is about 887.0990955279.

The spelling of 698098025 in words is "six hundred ninety-eight million, ninety-eight thousand, twenty-five".