783215056 has 20 divisors (see below), whose sum is σ = 1634208772. Its totient is φ = 361483776.

The previous prime is 783215047. The next prime is 783215057. The reversal of 783215056 is 650512387.

It can be written as a sum of positive squares in 2 ways, for example, as 365421456 + 417793600 = 19116^2 + 20440^2 .

It is a super-3 number, since 3×783215056³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783215057) 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, 1882521 + ... + 1882936.

Almost surely, 2^783215056 is an apocalyptic number.

It is an amenable number.

783215056 is an abundant number, since it is smaller than the sum of its proper divisors (850993716).

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

783215056 is a wasteful number, since it uses less digits than its factorization.

783215056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3765478 (or 3765472 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 783215056 is about 27985.9796326661. The cubic root of 783215056 is about 921.7794231446.

The spelling of 783215056 in words is "seven hundred eighty-three million, two hundred fifteen thousand, fifty-six".