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410881 = 6412

410881 has 3 divisors (see below), whose sum is σ = 411523. Its totient is φ = 410240.

The previous prime is 410857. The next prime is 410899. The reversal of 410881 is 188014.

The square root of 410881 is 641.

It is a perfect power (a square), and thus also a powerful 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, and also an emirpimes, since its reverse is a distinct semiprime: 188014 = 294007.

It can be written as a sum of positive squares in only one way, i.e., 370881 + 40000 = 609^2 + 200^2 .

It is a de Polignac number, because none of the positive numbers 2k-410881 is a prime.

It is a super-2 number, since 2×4108812 = 337646392322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (410801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 321 + ... + 961.

2410881 is an apocalyptic number.

410881 is the 641-st square number.

410881 is the 321-st centered octagonal number.

It is an amenable number.

410881 is a deficient number, since it is larger than the sum of its proper divisors (642).

410881 is an frugal number, since it uses more digits than its factorization.

410881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 641 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The cubic root of 410881 is about 74.3427610199.

Multiplying 410881 by its product of nonzero digits (256), we get a square (105185536 = 102562).

Adding to 410881 its reverse (188014), we get a palindrome (598895).

The spelling of 410881 in words is "four hundred ten thousand, eight hundred eighty-one".

Divisors: 1 641 410881