775222747 has 8 divisors (see below), whose sum is σ = 852618816. Its totient is φ = 700364352.

The previous prime is 775222741. The next prime is 775222757. The reversal of 775222747 is 747222577.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 775222747 - 2¹⁹ = 774698459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (775222741) 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 7 ways as a sum of consecutive naturals, for example, 633778 + ... + 634999.

It is an arithmetic number, because the mean of its divisors is an integer number (106577352).

Almost surely, 2^775222747 is an apocalyptic number.

775222747 is a deficient number, since it is larger than the sum of its proper divisors (77396069).

775222747 is a wasteful number, since it uses less digits than its factorization.

775222747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268837.

The product of its digits is 384160, while the sum is 43.

The square root of 775222747 is about 27842.8221809500. The cubic root of 775222747 is about 918.6332679557.

The spelling of 775222747 in words is "seven hundred seventy-five million, two hundred twenty-two thousand, seven hundred forty-seven".