768428847 has 12 divisors (see below), whose sum is σ = 1137025344. Its totient is φ = 499790880.

The previous prime is 768428831. The next prime is 768428861. The reversal of 768428847 is 748824867.

It is a happy number.

It is not a de Polignac number, because 768428847 - 2⁴ = 768428831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 768428793 and 768428802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768428887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1040863 + ... + 1041600.

It is an arithmetic number, because the mean of its divisors is an integer number (94752112).

Almost surely, 2^768428847 is an apocalyptic number.

768428847 is a deficient number, since it is larger than the sum of its proper divisors (368596497).

768428847 is a wasteful number, since it uses less digits than its factorization.

768428847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082510 (or 2082507 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The square root of 768428847 is about 27720.5491828715. The cubic root of 768428847 is about 915.9418162384.

The spelling of 768428847 in words is "seven hundred sixty-eight million, four hundred twenty-eight thousand, eight hundred forty-seven".