7771013 has 2 divisors, whose sum is σ = 7771014. Its totient is φ = 7771012.

The previous prime is 7771009. The next prime is 7771031. The reversal of 7771013 is 3101777.

Together with next prime (7771031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6466849 + 1304164 = 2543^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 7771013 - 2² = 7771009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7771063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3885506 + 3885507.

It is an arithmetic number, because the mean of its divisors is an integer number (3885507).

Almost surely, 2^7771013 is an apocalyptic number.

It is an amenable number.

7771013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7771013 is an equidigital number, since it uses as much as digits as its factorization.

7771013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1029, while the sum is 26.

The square root of 7771013 is about 2787.6536728941. The cubic root of 7771013 is about 198.0732732242.

The spelling of 7771013 in words is "seven million, seven hundred seventy-one thousand, thirteen".