689149668480 has 256 divisors, whose sum is σ = 2703587846400. Its totient is φ = 145402970112.

The previous prime is 689149668463. The next prime is 689149668497. The reversal of 689149668480 is 84866941986.

It is an interprime number because it is at equal distance from previous prime (689149668463) and next prime (689149668497).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1797435 + ... + 2146874.

It is an arithmetic number, because the mean of its divisors is an integer number (10560890025).

Almost surely, 2^689149668480 is an apocalyptic number.

689149668480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689149668480 is an abundant number, since it is smaller than the sum of its proper divisors (2014438177920).

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

689149668480 is a wasteful number, since it uses less digits than its factorization.

689149668480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944351 (or 3944339 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 69.

The spelling of 689149668480 in words is "six hundred eighty-nine billion, one hundred forty-nine million, six hundred sixty-eight thousand, four hundred eighty".