775824243 has 4 divisors (see below), whose sum is σ = 1034432328. Its totient is φ = 517216160.

The previous prime is 775824233. The next prime is 775824277. The reversal of 775824243 is 342428577.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 775824243 - 2⁴ = 775824227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 775824195 and 775824204.

It is not an unprimeable number, because it can be changed into a prime (775824233) 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 3 ways as a sum of consecutive naturals, for example, 129304038 + ... + 129304043.

It is an arithmetic number, because the mean of its divisors is an integer number (258608082).

Almost surely, 2^775824243 is an apocalyptic number.

775824243 is a deficient number, since it is larger than the sum of its proper divisors (258608085).

775824243 is a wasteful number, since it uses less digits than its factorization.

775824243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258608084.

The product of its digits is 376320, while the sum is 42.

The square root of 775824243 is about 27853.6217214207. The cubic root of 775824243 is about 918.8707959826.

The spelling of 775824243 in words is "seven hundred seventy-five million, eight hundred twenty-four thousand, two hundred forty-three".