2661941 has 4 divisors (see below), whose sum is σ = 2685612. Its totient is φ = 2638272.

The previous prime is 2661937. The next prime is 2661943. The reversal of 2661941 is 1491662.

2661941 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 21316 + 2640625 = 146^2 + 1625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2661941 - 2² = 2661937 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 (2661943) 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, 11666 + ... + 11891.

It is an arithmetic number, because the mean of its divisors is an integer number (671403).

2^2661941 is an apocalyptic number.

It is an amenable number.

2661941 is a deficient number, since it is larger than the sum of its proper divisors (23671).

2661941 is a wasteful number, since it uses less digits than its factorization.

2661941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23670.

The product of its digits is 2592, while the sum is 29.

The square root of 2661941 is about 1631.5455862464. The cubic root of 2661941 is about 138.5902915781.

The spelling of 2661941 in words is "two million, six hundred sixty-one thousand, nine hundred forty-one".