783126845 has 32 divisors (see below), whose sum is σ = 1025693280. Its totient is φ = 571760640.

The previous prime is 783126809. The next prime is 783126847. The reversal of 783126845 is 548621387.

783126845 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 382046116 + 401080729 = 19546^2 + 20027^2 .

It is not a de Polignac number, because 783126845 - 2²² = 778932541 is a prime.

It is a super-2 number, since 2×783126845² = 1226575310719308050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 783126796 and 783126805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (783126847) 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 31 ways as a sum of consecutive naturals, for example, 377471 + ... + 379539.

It is an arithmetic number, because the mean of its divisors is an integer number (32052915).

Almost surely, 2^783126845 is an apocalyptic number.

It is an amenable number.

783126845 is a deficient number, since it is larger than the sum of its proper divisors (242566435).

783126845 is a wasteful number, since it uses less digits than its factorization.

783126845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225.

The product of its digits is 322560, while the sum is 44.

The square root of 783126845 is about 27984.4036027213. The cubic root of 783126845 is about 921.7448161586.

The spelling of 783126845 in words is "seven hundred eighty-three million, one hundred twenty-six thousand, eight hundred forty-five".