6989928564 has 24 divisors (see below), whose sum is σ = 16553265568. Its totient is φ = 2295200160.

The previous prime is 6989928559. The next prime is 6989928613. The reversal of 6989928564 is 4658299896.

It is a junction number, because it is equal to n+sod(n) for n = 6989928495 and 6989928504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4346167 + ... + 4347774.

Almost surely, 2^6989928564 is an apocalyptic number.

It is an amenable number.

6989928564 is an abundant number, since it is smaller than the sum of its proper divisors (9563337004).

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

6989928564 is a wasteful number, since it uses less digits than its factorization.

6989928564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8694015 (or 8694013 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 66.

The square root of 6989928564 is about 83605.7926462036. The cubic root of 6989928564 is about 1912.0133155734.

The spelling of 6989928564 in words is "six billion, nine hundred eighty-nine million, nine hundred twenty-eight thousand, five hundred sixty-four".