785681312 has 96 divisors (see below), whose sum is σ = 1771761600. Its totient is φ = 339959808.

The previous prime is 785681291. The next prime is 785681327. The reversal of 785681312 is 213186587.

It is a self number, because there is not a number n which added to its sum of digits gives 785681312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845264 + ... + 846192.

It is an arithmetic number, because the mean of its divisors is an integer number (18455850).

Almost surely, 2^785681312 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 785681312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885880800).

785681312 is an abundant number, since it is smaller than the sum of its proper divisors (986080288).

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

785681312 is a wasteful number, since it uses less digits than its factorization.

785681312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1070 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 785681312 is about 28030.0073492677. The cubic root of 785681312 is about 922.7459359021.

The spelling of 785681312 in words is "seven hundred eighty-five million, six hundred eighty-one thousand, three hundred twelve".