775560668797 has 4 divisors (see below), whose sum is σ = 775571006236. Its totient is φ = 775550331360.

The previous prime is 775560668783. The next prime is 775560668843. The reversal of 775560668797 is 797866065577.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55542234276 + 720018434521 = 235674^2 + 848539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775560668797 is a prime.

It is a super-3 number, since 3×775560668797³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775560668777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5055354 + ... + 5206507.

It is an arithmetic number, because the mean of its divisors is an integer number (193892751559).

Almost surely, 2^775560668797 is an apocalyptic number.

It is an amenable number.

775560668797 is a deficient number, since it is larger than the sum of its proper divisors (10337439).

775560668797 is a wasteful number, since it uses less digits than its factorization.

775560668797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10337438.

The product of its (nonzero) digits is 933508800, while the sum is 73.

The spelling of 775560668797 in words is "seven hundred seventy-five billion, five hundred sixty million, six hundred sixty-eight thousand, seven hundred ninety-seven".