698798401056 has 72 divisors (see below), whose sum is σ = 2271094809984. Its totient is φ = 199656685440.

The previous prime is 698798401033. The next prime is 698798401057. The reversal of 698798401056 is 650104897896.

698798401056 is a `hidden beast` number, since 6 + 98 + 7 + 98 + 401 + 0 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 698798400984 and 698798401002.

It is not an unprimeable number, because it can be changed into a prime (698798401057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173311080 + ... + 173315111.

It is an arithmetic number, because the mean of its divisors is an integer number (31542983472).

Almost surely, 2^698798401056 is an apocalyptic number.

It is an amenable number.

698798401056 is an abundant number, since it is smaller than the sum of its proper divisors (1572296408928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698798401056 is a wasteful number, since it uses less digits than its factorization.

698798401056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346626214 (or 346626203 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 698798401056 in words is "six hundred ninety-eight billion, seven hundred ninety-eight million, four hundred one thousand, fifty-six".