2661011 has 8 divisors (see below), whose sum is σ = 2786400. Its totient is φ = 2537920.

The previous prime is 2660989. The next prime is 2661013. The reversal of 2661011 is 1101662.

It is a happy number.

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 2661011 - 2¹⁴ = 2644627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661013) 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, 2066 + ... + 3096.

It is an arithmetic number, because the mean of its divisors is an integer number (348300).

2^2661011 is an apocalyptic number.

2661011 is a deficient number, since it is larger than the sum of its proper divisors (125389).

2661011 is a wasteful number, since it uses less digits than its factorization.

2661011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2661011 is about 1631.2605555214. The cubic root of 2661011 is about 138.5741499751.

Adding to 2661011 its reverse (1101662), we get a palindrome (3762673).

The spelling of 2661011 in words is "two million, six hundred sixty-one thousand, eleven".