574781809 has 12 divisors (see below), whose sum is σ = 675249588. Its totient is φ = 487788000.

The previous prime is 574781797. The next prime is 574781813. The reversal of 574781809 is 908187475.

It can be written as a sum of positive squares in 2 ways, for example, as 362788209 + 211993600 = 19047^2 + 14560^2 .

It is a de Polignac number, because none of the positive numbers 2^k-574781809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (574781869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53122 + ... + 63019.

It is an arithmetic number, because the mean of its divisors is an integer number (56270799).

Almost surely, 2^574781809 is an apocalyptic number.

It is an amenable number.

574781809 is a deficient number, since it is larger than the sum of its proper divisors (100467779).

574781809 is a wasteful number, since it uses less digits than its factorization.

574781809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116256 (or 116249 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 574781809 is about 23974.6075880295. The cubic root of 574781809 is about 831.4465551815.

The spelling of 574781809 in words is "five hundred seventy-four million, seven hundred eighty-one thousand, eight hundred nine".