789660 has 72 divisors (see below), whose sum is σ = 2476656. Its totient is φ = 203520.

The previous prime is 789653. The next prime is 789671. The reversal of 789660 is 66987.

789660 = T₆₄ + T₆₅ + ... + T₁₇₀.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

789660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7327 + ... + 7433.

It is an arithmetic number, because the mean of its divisors is an integer number (34398).

2⁷⁸⁹⁶⁶⁰ 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 789660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238328).

789660 is an abundant number, since it is smaller than the sum of its proper divisors (1686996).

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

789660 is a wasteful number, since it uses less digits than its factorization.

789660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 789660 is about 888.6281562048. The cubic root of 789660 is about 92.4300908349.

The spelling of 789660 in words is "seven hundred eighty-nine thousand, six hundred sixty".