698057798056 has 8 divisors (see below), whose sum is σ = 1308858371370. Its totient is φ = 349028899024.

The previous prime is 698057798029. The next prime is 698057798093. The reversal of 698057798056 is 650897750896.

It can be written as a sum of positive squares in only one way, i.e., 616052312100 + 82005485956 = 784890^2 + 286366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43628612371 + ... + 43628612386.

Almost surely, 2^698057798056 is an apocalyptic number.

It is an amenable number.

698057798056 is a deficient number, since it is larger than the sum of its proper divisors (610800573314).

698057798056 is a wasteful number, since it uses less digits than its factorization.

698057798056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87257224763 (or 87257224759 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 70.

The spelling of 698057798056 in words is "six hundred ninety-eight billion, fifty-seven million, seven hundred ninety-eight thousand, fifty-six".