696776156865 has 12 divisors (see below), whose sum is σ = 1207745338644. Its totient is φ = 371613950304.

The previous prime is 696776156863. The next prime is 696776156917. The reversal of 696776156865 is 568651677696.

It can be written as a sum of positive squares in 2 ways, for example, as 321339329424 + 375436827441 = 566868^2 + 612729^2 .

It is not a de Polignac number, because 696776156865 - 2¹ = 696776156863 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 696776156793 and 696776156802.

It is not an unprimeable number, because it can be changed into a prime (696776156861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7741957254 + ... + 7741957343.

It is an arithmetic number, because the mean of its divisors is an integer number (100645444887).

Almost surely, 2^696776156865 is an apocalyptic number.

It is an amenable number.

696776156865 is a deficient number, since it is larger than the sum of its proper divisors (510969181779).

696776156865 is a wasteful number, since it uses less digits than its factorization.

696776156865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15483914608 (or 15483914605 counting only the distinct ones).

The product of its digits is 685843200, while the sum is 72.

The spelling of 696776156865 in words is "six hundred ninety-six billion, seven hundred seventy-six million, one hundred fifty-six thousand, eight hundred sixty-five".