473781 has 24 divisors (see below), whose sum is σ = 804384. Its totient is φ = 245280.

The previous prime is 473761. The next prime is 473789. The reversal of 473781 is 187374.

473781 = 14² + 15² + ... + 112².

It is a happy number.

It is not a de Polignac number, because 473781 - 2¹⁴ = 457397 is a prime.

It is a super-2 number, since 2×473781² = 448936871922, which contains 22 as substring.

473781 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 473781.

It is not an unprimeable number, because it can be changed into a prime (473789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1471 + ... + 1763.

It is an arithmetic number, because the mean of its divisors is an integer number (33516).

2⁴⁷³⁷⁸¹ is an apocalyptic number.

It is an amenable number.

473781 is a deficient number, since it is larger than the sum of its proper divisors (330603).

473781 is a wasteful number, since it uses less digits than its factorization.

473781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 314 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 473781 is about 688.3175139425. The cubic root of 473781 is about 77.9577351565.

It can be divided in two parts, 47 and 3781, that added together give a triangular number (3828 = T₈₇).

The spelling of 473781 in words is "four hundred seventy-three thousand, seven hundred eighty-one".