689498484651 has 80 divisors (see below), whose sum is σ = 1111416731040. Its totient is φ = 424556536320.

The previous prime is 689498484629. The next prime is 689498484659. The reversal of 689498484651 is 156484894986.

689498484651 is a `hidden beast` number, since 6 + 8 + 9 + 4 + 98 + 484 + 6 + 51 = 666.

It is not a de Polignac number, because 689498484651 - 2⁷ = 689498484523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 689498484651.

It is not an unprimeable number, because it can be changed into a prime (689498484659) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 121967541 + ... + 121973193.

It is an arithmetic number, because the mean of its divisors is an integer number (13892709138).

Almost surely, 2^689498484651 is an apocalyptic number.

689498484651 is a deficient number, since it is larger than the sum of its proper divisors (421918246389).

689498484651 is a wasteful number, since it uses less digits than its factorization.

689498484651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658 (or 7649 counting only the distinct ones).

The product of its digits is 477757440, while the sum is 72.

The spelling of 689498484651 in words is "six hundred eighty-nine billion, four hundred ninety-eight million, four hundred eighty-four thousand, six hundred fifty-one".