5408681 has 4 divisors (see below), whose sum is σ = 5416452. Its totient is φ = 5400912.

The previous prime is 5408671. The next prime is 5408701. The reversal of 5408681 is 1868045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 931225 + 4477456 = 965^2 + 2116^2 .

It is a cyclic number.

It is not a de Polignac number, because 5408681 - 2⁶ = 5408617 is a prime.

It is a super-2 number, since 2×5408681² = 58507660319522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5408671) 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, 2726 + ... + 4271.

It is an arithmetic number, because the mean of its divisors is an integer number (1354113).

Almost surely, 2^5408681 is an apocalyptic number.

It is an amenable number.

5408681 is a deficient number, since it is larger than the sum of its proper divisors (7771).

5408681 is an equidigital number, since it uses as much as digits as its factorization.

5408681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 5408681 is about 2325.6571114418. The cubic root of 5408681 is about 175.5350265449.

The spelling of 5408681 in words is "five million, four hundred eight thousand, six hundred eighty-one".