473785681 has 4 divisors (see below), whose sum is σ = 473926500. Its totient is φ = 473644864.

The previous prime is 473785643. The next prime is 473785687. The reversal of 473785681 is 186587374.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39438400 + 434347281 = 6280^2 + 20841^2 .

It is a cyclic number.

It is not a de Polignac number, because 473785681 - 2¹⁷ = 473654609 is a prime.

It is a super-2 number, since 2×473785681² = 448945743041267522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (473785687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65236 + ... + 72133.

It is an arithmetic number, because the mean of its divisors is an integer number (118481625).

Almost surely, 2^473785681 is an apocalyptic number.

It is an amenable number.

473785681 is a deficient number, since it is larger than the sum of its proper divisors (140819).

473785681 is a wasteful number, since it uses less digits than its factorization.

473785681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140818.

The product of its digits is 1128960, while the sum is 49.

The square root of 473785681 is about 21766.6185017333. The cubic root of 473785681 is about 779.5799189891.

The spelling of 473785681 in words is "four hundred seventy-three million, seven hundred eighty-five thousand, six hundred eighty-one".