5407681 has 4 divisors (see below), whose sum is σ = 5419972. Its totient is φ = 5395392.

The previous prime is 5407669. The next prime is 5407687. The reversal of 5407681 is 1867045.

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 4910656 + 497025 = 2216^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 5407681 - 2¹⁹ = 4883393 is a prime.

It is a super-2 number, since 2×5407681² = 58486027595522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5407687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5460 + ... + 6373.

It is an arithmetic number, because the mean of its divisors is an integer number (1354993).

Almost surely, 2^5407681 is an apocalyptic number.

It is an amenable number.

5407681 is a deficient number, since it is larger than the sum of its proper divisors (12291).

5407681 is a wasteful number, since it uses less digits than its factorization.

5407681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12290.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 5407681 is about 2325.4421085032. The cubic root of 5407681 is about 175.5242077737.

The spelling of 5407681 in words is "five million, four hundred seven thousand, six hundred eighty-one".