2661013 has 2 divisors, whose sum is σ = 2661014. Its totient is φ = 2661012.

The previous prime is 2660989. The next prime is 2661067. The reversal of 2661013 is 3101662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 762129 = 1378^2 + 873^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2661013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2661413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330506 + 1330507.

It is an arithmetic number, because the mean of its divisors is an integer number (1330507).

2^2661013 is an apocalyptic number.

It is an amenable number.

2661013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661013 is an equidigital number, since it uses as much as digits as its factorization.

2661013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2661013 is about 1631.2611685441. The cubic root of 2661013 is about 138.5741846923.

Adding to 2661013 its reverse (3101662), we get a palindrome (5762675).

The spelling of 2661013 in words is "two million, six hundred sixty-one thousand, thirteen".