5398681 has 8 divisors (see below), whose sum is σ = 5600000. Its totient is φ = 5199120.

The previous prime is 5398597. The next prime is 5398697. The reversal of 5398681 is 1868935.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5398681 - 2¹⁷ = 5267609 is a prime.

It is a super-2 number, since 2×5398681² = 58291513079522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5398181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10570 + ... + 11068.

It is an arithmetic number, because the mean of its divisors is an integer number (700000).

Almost surely, 2^5398681 is an apocalyptic number.

It is an amenable number.

5398681 is a deficient number, since it is larger than the sum of its proper divisors (201319).

5398681 is a wasteful number, since it uses less digits than its factorization.

5398681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its digits is 51840, while the sum is 40.

The square root of 5398681 is about 2323.5061867789. The cubic root of 5398681 is about 175.4267787614.

The spelling of 5398681 in words is "five million, three hundred ninety-eight thousand, six hundred eighty-one".