809568475 has 36 divisors (see below), whose sum is σ = 1079227800. Its totient is φ = 602229760.

The previous prime is 809568401. The next prime is 809568479. The reversal of 809568475 is 574865908.

It is not a de Polignac number, because 809568475 - 2¹⁵ = 809535707 is a prime.

It is a super-2 number, since 2×809568475² = 1310802231427651250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (809568479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 642396 + ... + 643654.

It is an arithmetic number, because the mean of its divisors is an integer number (29978550).

Almost surely, 2^809568475 is an apocalyptic number.

809568475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

809568475 is a deficient number, since it is larger than the sum of its proper divisors (269659325).

809568475 is a wasteful number, since it uses less digits than its factorization.

809568475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The square root of 809568475 is about 28452.9168100566. The cubic root of 809568475 is about 932.0041855283.

The spelling of 809568475 in words is "eight hundred nine million, five hundred sixty-eight thousand, four hundred seventy-five".