784581013 has 8 divisors (see below), whose sum is σ = 794842200. Its totient is φ = 774352128.

The previous prime is 784581001. The next prime is 784581113. The reversal of 784581013 is 310185487.

784581013 is digitally balanced in base 2, 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 4 ways, for example, as 44849809 + 739731204 = 6697^2 + 27198^2 .

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 784581013 - 2¹³ = 784572821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784581113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42895 + ... + 58387.

It is an arithmetic number, because the mean of its divisors is an integer number (99355275).

Almost surely, 2^784581013 is an apocalyptic number.

It is an amenable number.

784581013 is a deficient number, since it is larger than the sum of its proper divisors (10261187).

784581013 is a wasteful number, since it uses less digits than its factorization.

784581013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16151.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 784581013 is about 28010.3733106148. The cubic root of 784581013 is about 922.3149847697.

The spelling of 784581013 in words is "seven hundred eighty-four million, five hundred eighty-one thousand, thirteen".