481607781 has 8 divisors (see below), whose sum is σ = 642647040. Its totient is φ = 320820192.

The previous prime is 481607759. The next prime is 481607803. The reversal of 481607781 is 187706184.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (481607759) and next prime (481607803).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 481607781 - 2¹³ = 481599589 is a prime.

It is a super-2 number, since 2×481607781² = 463892109439487922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481607701) 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 7 ways as a sum of consecutive naturals, for example, 58405 + ... + 66138.

It is an arithmetic number, because the mean of its divisors is an integer number (80330880).

Almost surely, 2^481607781 is an apocalyptic number.

It is an amenable number.

481607781 is a deficient number, since it is larger than the sum of its proper divisors (161039259).

481607781 is a wasteful number, since it uses less digits than its factorization.

481607781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125835.

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 481607781 is about 21945.5640392313. The cubic root of 481607781 is about 783.8467553501.

The spelling of 481607781 in words is "four hundred eighty-one million, six hundred seven thousand, seven hundred eighty-one".