7881337 has 2 divisors, whose sum is σ = 7881338. Its totient is φ = 7881336.

The previous prime is 7881331. The next prime is 7881373. The reversal of 7881337 is 7331887.

Together with next prime (7881373) 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., 7485696 + 395641 = 2736^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 7881337 - 2³ = 7881329 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7881296 and 7881305.

It is not a weakly prime, because it can be changed into another prime (7881331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940668 + 3940669.

It is an arithmetic number, because the mean of its divisors is an integer number (3940669).

Almost surely, 2^7881337 is an apocalyptic number.

It is an amenable number.

7881337 is a deficient number, since it is larger than the sum of its proper divisors (1).

7881337 is an equidigital number, since it uses as much as digits as its factorization.

7881337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 37.

The square root of 7881337 is about 2807.3719026876. The cubic root of 7881337 is about 199.0062117704.

It can be divided in two parts, 788133 and 7, that added together give a triangular number (788140 = T₁₂₅₅).

The spelling of 7881337 in words is "seven million, eight hundred eighty-one thousand, three hundred thirty-seven".