689497488120 has 256 divisors, whose sum is σ = 2491287321600. Its totient is φ = 149132206080.

The previous prime is 689497488091. The next prime is 689497488131. The reversal of 689497488120 is 21884794986.

It is a super-2 number, since 2×689497488120² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14036242 + ... + 14085278.

It is an arithmetic number, because the mean of its divisors is an integer number (9731591100).

Almost surely, 2^689497488120 is an apocalyptic number.

689497488120 is a gapful number since it is divisible by the number (60) 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 689497488120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245643660800).

689497488120 is an abundant number, since it is smaller than the sum of its proper divisors (1801789833480).

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

689497488120 is a wasteful number, since it uses less digits than its factorization.

689497488120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49958 (or 49954 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 66.

The spelling of 689497488120 in words is "six hundred eighty-nine billion, four hundred ninety-seven million, four hundred eighty-eight thousand, one hundred twenty".