461305681 has 4 divisors (see below), whose sum is σ = 463624000. Its totient is φ = 458987364.

The previous prime is 461305657. The next prime is 461305703. The reversal of 461305681 is 186503164.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461305681 - 2¹⁵ = 461272913 is a prime.

It is a super-2 number, since 2×461305681² = 425605862645747522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461305651) 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, 1158861 + ... + 1159258.

It is an arithmetic number, because the mean of its divisors is an integer number (115906000).

Almost surely, 2^461305681 is an apocalyptic number.

It is an amenable number.

461305681 is a deficient number, since it is larger than the sum of its proper divisors (2318319).

461305681 is a wasteful number, since it uses less digits than its factorization.

461305681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318318.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 461305681 is about 21478.0278657050. The cubic root of 461305681 is about 772.6739446939.

The spelling of 461305681 in words is "four hundred sixty-one million, three hundred five thousand, six hundred eighty-one".