2668961 has 4 divisors (see below), whose sum is σ = 2706624. Its totient is φ = 2631300.

The previous prime is 2668931. The next prime is 2668993. The reversal of 2668961 is 1698662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2668961 - 2¹⁰ = 2667937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2668931) 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, 18725 + ... + 18866.

It is an arithmetic number, because the mean of its divisors is an integer number (676656).

2^2668961 is an apocalyptic number.

It is an amenable number.

2668961 is a deficient number, since it is larger than the sum of its proper divisors (37663).

2668961 is an equidigital number, since it uses as much as digits as its factorization.

2668961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37662.

The product of its digits is 31104, while the sum is 38.

The square root of 2668961 is about 1633.6955040643. The cubic root of 2668961 is about 138.7120135170.

Subtracting from 2668961 its reverse (1698662), we obtain a cube (970299 = 99³).

The spelling of 2668961 in words is "two million, six hundred sixty-eight thousand, nine hundred sixty-one".