689904287744 has 192 divisors, whose sum is σ = 1632087475200. Its totient is φ = 285380444160.

The previous prime is 689904287711. The next prime is 689904287789. The reversal of 689904287744 is 447782409986.

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, 1820327747 + ... + 1820328125.

It is an arithmetic number, because the mean of its divisors is an integer number (8500455600).

Almost surely, 2^689904287744 is an apocalyptic number.

689904287744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 689904287744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (816043737600).

689904287744 is an abundant number, since it is smaller than the sum of its proper divisors (942183187456).

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

689904287744 is an frugal number, since it uses more digits than its factorization.

689904287744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 195084288, while the sum is 68.

The spelling of 689904287744 in words is "six hundred eighty-nine billion, nine hundred four million, two hundred eighty-seven thousand, seven hundred forty-four".