778064236 has 12 divisors (see below), whose sum is σ = 1374105040. Its totient is φ = 385462800.

The previous prime is 778064227. The next prime is 778064239. The reversal of 778064236 is 632460877.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 778064192 and 778064201.

It is not an unprimeable number, because it can be changed into a prime (778064239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891840 + ... + 892711.

Almost surely, 2^778064236 is an apocalyptic number.

It is an amenable number.

778064236 is a deficient number, since it is larger than the sum of its proper divisors (596040804).

778064236 is a wasteful number, since it uses less digits than its factorization.

778064236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784664 (or 1784662 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 778064236 is about 27893.8028242834. The cubic root of 778064236 is about 919.7542806284.

The spelling of 778064236 in words is "seven hundred seventy-eight million, sixty-four thousand, two hundred thirty-six".