775065564 has 192 divisors, whose sum is σ = 2619187200. Its totient is φ = 192347136.

The previous prime is 775065559. The next prime is 775065593. The reversal of 775065564 is 465560577.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 164757 + ... + 169395.

It is an arithmetic number, because the mean of its divisors is an integer number (13641600).

Almost surely, 2^775065564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 775065564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1309593600).

775065564 is an abundant number, since it is smaller than the sum of its proper divisors (1844121636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775065564 is a wasteful number, since it uses less digits than its factorization.

775065564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689 (or 4681 counting only the distinct ones).

The product of its (nonzero) digits is 882000, while the sum is 45.

The square root of 775065564 is about 27839.9993534483. Note that the first 3 decimals coincide. The cubic root of 775065564 is about 918.5711768584.

The spelling of 775065564 in words is "seven hundred seventy-five million, sixty-five thousand, five hundred sixty-four".