797775653 has 2 divisors, whose sum is σ = 797775654. Its totient is φ = 797775652.

The previous prime is 797775623. The next prime is 797775659. The reversal of 797775653 is 356577797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559937569 + 237838084 = 23663^2 + 15422^2 .

It is a cyclic number.

It is not a de Polignac number, because 797775653 - 2¹⁰ = 797774629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (797775659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398887826 + 398887827.

It is an arithmetic number, because the mean of its divisors is an integer number (398887827).

Almost surely, 2^797775653 is an apocalyptic number.

It is an amenable number.

797775653 is a deficient number, since it is larger than the sum of its proper divisors (1).

797775653 is an equidigital number, since it uses as much as digits as its factorization.

797775653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9724050, while the sum is 56.

The square root of 797775653 is about 28244.9226056649. The cubic root of 797775653 is about 927.4565927332.

The spelling of 797775653 in words is "seven hundred ninety-seven million, seven hundred seventy-five thousand, six hundred fifty-three".