782768485 has 16 divisors (see below), whose sum is σ = 1021460976. Its totient is φ = 573447168.

The previous prime is 782768477. The next prime is 782768509. The reversal of 782768485 is 584867287.

It is a Cunningham number, because it is equal to 27978²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 18301284 + 764467201 = 4278^2 + 27649^2 .

It is a cyclic number.

It is not a de Polignac number, because 782768485 - 2³ = 782768477 is a prime.

It is a super-2 number, since 2×782768485² = 1225453002218390450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121302 + ... + 127591.

It is an arithmetic number, because the mean of its divisors is an integer number (63841311).

Almost surely, 2^782768485 is an apocalyptic number.

It is an amenable number.

782768485 is a deficient number, since it is larger than the sum of its proper divisors (238692491).

782768485 is a wasteful number, since it uses less digits than its factorization.

782768485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248952.

The product of its digits is 6021120, while the sum is 55.

The square root of 782768485 is about 27978.0000178712. Note that the first 4 decimals coincide. The cubic root of 782768485 is about 921.6041974446.

The spelling of 782768485 in words is "seven hundred eighty-two million, seven hundred sixty-eight thousand, four hundred eighty-five".