2665913 has 2 divisors, whose sum is σ = 2665914. Its totient is φ = 2665912.

The previous prime is 2665891. The next prime is 2665931. The reversal of 2665913 is 3195662.

It is a happy number.

Together with next prime (2665931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 824464 = 1357^2 + 908^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665913 - 2⁶ = 2665849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2665913.

It is not a weakly prime, because it can be changed into another prime (2665933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332956 + 1332957.

It is an arithmetic number, because the mean of its divisors is an integer number (1332957).

2^2665913 is an apocalyptic number.

It is an amenable number.

2665913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665913 is an equidigital number, since it uses as much as digits as its factorization.

2665913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 32.

The square root of 2665913 is about 1632.7623832022. The cubic root of 2665913 is about 138.6591895572.

The spelling of 2665913 in words is "two million, six hundred sixty-five thousand, nine hundred thirteen".