785378812 has 12 divisors (see below), whose sum is σ = 1421806680. Its totient is φ = 379148336.

The previous prime is 785378791. The next prime is 785378819. The reversal of 785378812 is 218873587.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785378819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385138 + ... + 3385369.

It is an arithmetic number, because the mean of its divisors is an integer number (118483890).

Almost surely, 2^785378812 is an apocalyptic number.

It is an amenable number.

785378812 is a deficient number, since it is larger than the sum of its proper divisors (636427868).

785378812 is a wasteful number, since it uses less digits than its factorization.

785378812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770540 (or 6770538 counting only the distinct ones).

The product of its digits is 752640, while the sum is 49.

The square root of 785378812 is about 28024.6108269143. The cubic root of 785378812 is about 922.6274966688.

The spelling of 785378812 in words is "seven hundred eighty-five million, three hundred seventy-eight thousand, eight hundred twelve".