461683861 has 4 divisors (see below), whose sum is σ = 462193792. Its totient is φ = 461173932.

The previous prime is 461683823. The next prime is 461683919. The reversal of 461683861 is 168386164.

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 461683861 - 2⁹ = 461683349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461683811) 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, 253605 + ... + 255418.

It is an arithmetic number, because the mean of its divisors is an integer number (115548448).

Almost surely, 2^461683861 is an apocalyptic number.

It is an amenable number.

461683861 is a deficient number, since it is larger than the sum of its proper divisors (509931).

461683861 is an equidigital number, since it uses as much as digits as its factorization.

461683861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509930.

The product of its digits is 165888, while the sum is 43.

The square root of 461683861 is about 21486.8299430139. The cubic root of 461683861 is about 772.8850339486.

The spelling of 461683861 in words is "four hundred sixty-one million, six hundred eighty-three thousand, eight hundred sixty-one".