2775613 has 2 divisors, whose sum is σ = 2775614. Its totient is φ = 2775612.

The previous prime is 2775611. The next prime is 2775637. The reversal of 2775613 is 3165772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1570009 + 1205604 = 1253^2 + 1098^2 .

It is a cyclic number.

It is not a de Polignac number, because 2775613 - 2¹ = 2775611 is a prime.

Together with 2775611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2775611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387806 + 1387807.

It is an arithmetic number, because the mean of its divisors is an integer number (1387807).

2^2775613 is an apocalyptic number.

It is an amenable number.

2775613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2775613 is an equidigital number, since it uses as much as digits as its factorization.

2775613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 31.

The square root of 2775613 is about 1666.0171067549. The cubic root of 2775613 is about 140.5355845076.

The spelling of 2775613 in words is "two million, seven hundred seventy-five thousand, six hundred thirteen".