40822681 has 2 divisors, whose sum is σ = 40822682. Its totient is φ = 40822680.

The previous prime is 40822679. The next prime is 40822693. The reversal of 40822681 is 18622804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39488656 + 1334025 = 6284^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 40822681 - 2¹ = 40822679 is a prime.

It is a super-2 number, since 2×40822681² = 3332982568055522, which contains 22 as substring.

Together with 40822679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40822601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20411340 + 20411341.

It is an arithmetic number, because the mean of its divisors is an integer number (20411341).

Almost surely, 2^40822681 is an apocalyptic number.

It is an amenable number.

40822681 is a deficient number, since it is larger than the sum of its proper divisors (1).

40822681 is an equidigital number, since it uses as much as digits as its factorization.

40822681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 40822681 is about 6389.2629465377. The cubic root of 40822681 is about 344.3239045166.

The spelling of 40822681 in words is "forty million, eight hundred twenty-two thousand, six hundred eighty-one".