2681407 has 8 divisors (see below), whose sum is σ = 2811392. Its totient is φ = 2554200.

The previous prime is 2681389. The next prime is 2681417. The reversal of 2681407 is 7041862.

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 2681407 - 2¹⁹ = 2157119 is a prime.

It is the 1638-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681417) by changing a digit.

It is a nontrivial repunit in base 1637.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432 + ... + 2722.

It is an arithmetic number, because the mean of its divisors is an integer number (351424).

2^2681407 is an apocalyptic number.

2681407 is a deficient number, since it is larger than the sum of its proper divisors (129985).

2681407 is a wasteful number, since it uses less digits than its factorization.

2681407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 2681407 is about 1637.5002290076. The cubic root of 2681407 is about 138.9272949314.

The spelling of 2681407 in words is "two million, six hundred eighty-one thousand, four hundred seven".