698990056 has 16 divisors (see below), whose sum is σ = 1367589600. Its totient is φ = 334299504.

The previous prime is 698990041. The next prime is 698990057. The reversal of 698990056 is 650099896.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 698989985 and 698990012.

It is not an unprimeable number, because it can be changed into a prime (698990057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1899246 + ... + 1899613.

It is an arithmetic number, because the mean of its divisors is an integer number (85474350).

Almost surely, 2^698990056 is an apocalyptic number.

It is an amenable number.

698990056 is a deficient number, since it is larger than the sum of its proper divisors (668599544).

698990056 is a wasteful number, since it uses less digits than its factorization.

698990056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798888 (or 3798884 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 52.

The square root of 698990056 is about 26438.4200738244. The cubic root of 698990056 is about 887.4767803487.

The spelling of 698990056 in words is "six hundred ninety-eight million, nine hundred ninety thousand, fifty-six".