689502191616 has 1280 divisors, whose sum is σ = 2603490595200. Its totient is φ = 177343561728.

The previous prime is 689502191593. The next prime is 689502191641. The reversal of 689502191616 is 616191205986.

689502191616 is a `hidden beast` number, since 6 + 8 + 9 + 5 + 0 + 2 + 19 + 1 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11686477795 + ... + 11686477853.

Almost surely, 2^689502191616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689502191616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301745297600).

689502191616 is an abundant number, since it is smaller than the sum of its proper divisors (1913988403584).

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

689502191616 is an equidigital number, since it uses as much as digits as its factorization.

689502191616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 689502191616 in words is "six hundred eighty-nine billion, five hundred two million, one hundred ninety-one thousand, six hundred sixteen".