2743661 has 8 divisors (see below), whose sum is σ = 2916120. Its totient is φ = 2576448.

The previous prime is 2743627. The next prime is 2743669. The reversal of 2743661 is 1663472.

It can be written as a sum of positive squares in 4 ways, for example, as 866761 + 1876900 = 931^2 + 1370^2 .

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 2743661 - 2¹⁰ = 2742637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2743669) 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, 206 + ... + 2351.

It is an arithmetic number, because the mean of its divisors is an integer number (364515).

2^2743661 is an apocalyptic number.

It is an amenable number.

2743661 is a deficient number, since it is larger than the sum of its proper divisors (172459).

2743661 is a wasteful number, since it uses less digits than its factorization.

2743661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623.

The product of its digits is 6048, while the sum is 29.

The square root of 2743661 is about 1656.4000120744. The cubic root of 2743661 is about 139.9942344564.

The spelling of 2743661 in words is "two million, seven hundred forty-three thousand, six hundred sixty-one".