797775656 has 8 divisors (see below), whose sum is σ = 1495829370. Its totient is φ = 398887824.

The previous prime is 797775653. The next prime is 797775659. The reversal of 797775656 is 656577797.

797775656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (797775653) and next prime (797775659).

It can be written as a sum of positive squares in only one way, i.e., 793323556 + 4452100 = 28166^2 + 2110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 797775595 and 797775604.

It is not an unprimeable number, because it can be changed into a prime (797775653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49860971 + ... + 49860986.

Almost surely, 2^797775656 is an apocalyptic number.

It is an amenable number.

797775656 is a deficient number, since it is larger than the sum of its proper divisors (698053714).

797775656 is a wasteful number, since it uses less digits than its factorization.

797775656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99721963 (or 99721959 counting only the distinct ones).

The product of its digits is 19448100, while the sum is 59.

The square root of 797775656 is about 28244.9226587718. The cubic root of 797775656 is about 927.4565938958.

The spelling of 797775656 in words is "seven hundred ninety-seven million, seven hundred seventy-five thousand, six hundred fifty-six".