410681861 has 4 divisors (see below), whose sum is σ = 410724300. Its totient is φ = 410639424.

The previous prime is 410681837. The next prime is 410681879. The reversal of 410681861 is 168186014.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 175059361 + 235622500 = 13231^2 + 15350^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-410681861 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 (410381861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175 + ... + 28683.

It is an arithmetic number, because the mean of its divisors is an integer number (102681075).

Almost surely, 2^410681861 is an apocalyptic number.

It is an amenable number.

410681861 is a deficient number, since it is larger than the sum of its proper divisors (42439).

410681861 is a wasteful number, since it uses less digits than its factorization.

410681861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42438.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 410681861 is about 20265.2870939447. The cubic root of 410681861 is about 743.3074867287.

The spelling of 410681861 in words is "four hundred ten million, six hundred eighty-one thousand, eight hundred sixty-one".