775650969 has 18 divisors (see below), whose sum is σ = 1157704938. Its totient is φ = 500414400.

The previous prime is 775650961. The next prime is 775650979. The reversal of 775650969 is 969056577.

775650969 is a `hidden beast` number, since 7 + 75 + 6 + 509 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 697593744 + 78057225 = 26412^2 + 8835^2 .

It is not a de Polignac number, because 775650969 - 2³ = 775650961 is a prime.

It is a super-2 number, since 2×775650969² = 1203268851421277922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (775650961) 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 17 ways as a sum of consecutive naturals, for example, 36192 + ... + 53489.

It is an arithmetic number, because the mean of its divisors is an integer number (64316941).

Almost surely, 2^775650969 is an apocalyptic number.

It is an amenable number.

775650969 is a deficient number, since it is larger than the sum of its proper divisors (382053969).

775650969 is a wasteful number, since it uses less digits than its factorization.

775650969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89749 (or 89715 counting only the distinct ones).

The product of its (nonzero) digits is 3572100, while the sum is 54.

The square root of 775650969 is about 27850.5111084159. The cubic root of 775650969 is about 918.8023834633.

The spelling of 775650969 in words is "seven hundred seventy-five million, six hundred fifty thousand, nine hundred sixty-nine".