789640704 has 120 divisors (see below), whose sum is σ = 2347212120. Its totient is φ = 262112256.

The previous prime is 789640699. The next prime is 789640727. The reversal of 789640704 is 407046987.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a self number, because there is not a number n which added to its sum of digits gives 789640704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3303817 + ... + 3304055.

It is an arithmetic number, because the mean of its divisors is an integer number (19560101).

Almost surely, 2^789640704 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 789640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1173606060).

789640704 is an abundant number, since it is smaller than the sum of its proper divisors (1557571416).

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

789640704 is an frugal number, since it uses more digits than its factorization.

789640704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 789640704 is about 28100.5463292086. The cubic root of 789640704 is about 924.2933796001.

The spelling of 789640704 in words is "seven hundred eighty-nine million, six hundred forty thousand, seven hundred four".