7897013 has 2 divisors, whose sum is σ = 7897014. Its totient is φ = 7897012.

The previous prime is 7897003. The next prime is 7897031. The reversal of 7897013 is 3107987.

Together with next prime (7897031) 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., 6932689 + 964324 = 2633^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 7897013 - 2⁴ = 7896997 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 (7897003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3948506 + 3948507.

It is an arithmetic number, because the mean of its divisors is an integer number (3948507).

Almost surely, 2^7897013 is an apocalyptic number.

It is an amenable number.

7897013 is a deficient number, since it is larger than the sum of its proper divisors (1).

7897013 is an equidigital number, since it uses as much as digits as its factorization.

7897013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 7897013 is about 2810.1624508202. The cubic root of 7897013 is about 199.1380656825.

The spelling of 7897013 in words is "seven million, eight hundred ninety-seven thousand, thirteen".