410261681 has 2 divisors, whose sum is σ = 410261682. Its totient is φ = 410261680.

The previous prime is 410261671. The next prime is 410261729. The reversal of 410261681 is 186162014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408686656 + 1575025 = 20216^2 + 1255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-410261681 is a prime.

It is a super-2 number, since 2×410261681² = 336629293793891522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (410261641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205130840 + 205130841.

It is an arithmetic number, because the mean of its divisors is an integer number (205130841).

Almost surely, 2^410261681 is an apocalyptic number.

It is an amenable number.

410261681 is a deficient number, since it is larger than the sum of its proper divisors (1).

410261681 is an equidigital number, since it uses as much as digits as its factorization.

410261681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 410261681 is about 20254.9174523127. The cubic root of 410261681 is about 743.0539007250.

The spelling of 410261681 in words is "four hundred ten million, two hundred sixty-one thousand, six hundred eighty-one".