2735681 has 4 divisors (see below), whose sum is σ = 2946132. Its totient is φ = 2525232.

The previous prime is 2735671. The next prime is 2735683. The reversal of 2735681 is 1865372.

It is a happy number.

2735681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1343281 + 1392400 = 1159^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2735681 is a prime.

It is a super-2 number, since 2×2735681² = 14967901067522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2735683) 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, 105206 + ... + 105231.

It is an arithmetic number, because the mean of its divisors is an integer number (736533).

2^2735681 is an apocalyptic number.

It is an amenable number.

2735681 is a deficient number, since it is larger than the sum of its proper divisors (210451).

2735681 is a wasteful number, since it uses less digits than its factorization.

2735681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210450.

The product of its digits is 10080, while the sum is 32.

The square root of 2735681 is about 1653.9894195550. The cubic root of 2735681 is about 139.8583771920.

The spelling of 2735681 in words is "two million, seven hundred thirty-five thousand, six hundred eighty-one".