463456781 has 4 divisors (see below), whose sum is σ = 468045564. Its totient is φ = 458868000.

The previous prime is 463456769. The next prime is 463456849. The reversal of 463456781 is 187654364.

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 223981156 + 239475625 = 14966^2 + 15475^2 .

It is a cyclic number.

It is not a de Polignac number, because 463456781 - 2¹⁸ = 463194637 is a prime.

It is a super-2 number, since 2×463456781² = 429584375709763922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (463456181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2294240 + ... + 2294441.

It is an arithmetic number, because the mean of its divisors is an integer number (117011391).

Almost surely, 2^463456781 is an apocalyptic number.

It is an amenable number.

463456781 is a deficient number, since it is larger than the sum of its proper divisors (4588783).

463456781 is a wasteful number, since it uses less digits than its factorization.

463456781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4588782.

The product of its digits is 483840, while the sum is 44.

The square root of 463456781 is about 21528.0463814067. The cubic root of 463456781 is about 773.8730932333.

The spelling of 463456781 in words is "four hundred sixty-three million, four hundred fifty-six thousand, seven hundred eighty-one".