2682661 has 4 divisors (see below), whose sum is σ = 2709324. Its totient is φ = 2656000.

The previous prime is 2682653. The next prime is 2682679. The reversal of 2682661 is 1662862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1662862 = 2 ⋅831431.

It can be written as a sum of positive squares in 2 ways, for example, as 2461761 + 220900 = 1569^2 + 470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2682661 - 2³ = 2682653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2682061) 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, 13180 + ... + 13381.

It is an arithmetic number, because the mean of its divisors is an integer number (677331).

2^2682661 is an apocalyptic number.

It is an amenable number.

2682661 is a deficient number, since it is larger than the sum of its proper divisors (26663).

2682661 is a wasteful number, since it uses less digits than its factorization.

2682661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26662.

The product of its digits is 6912, while the sum is 31.

The square root of 2682661 is about 1637.8830849606. The cubic root of 2682661 is about 138.9489486971.

The spelling of 2682661 in words is "two million, six hundred eighty-two thousand, six hundred sixty-one".