7287856487 has 2 divisors, whose sum is σ = 7287856488. Its totient is φ = 7287856486.

The previous prime is 7287856423. The next prime is 7287856489. The reversal of 7287856487 is 7846587827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7287856487 - 2⁶ = 7287856423 is a prime.

It is a super-2 number, since 2×7287856487² (a number of 21 digits) contains 22 as substring.

Together with 7287856489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7287856489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643928243 + 3643928244.

It is an arithmetic number, because the mean of its divisors is an integer number (3643928244).

Almost surely, 2^7287856487 is an apocalyptic number.

7287856487 is a deficient number, since it is larger than the sum of its proper divisors (1).

7287856487 is an equidigital number, since it uses as much as digits as its factorization.

7287856487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42147840, while the sum is 62.

The square root of 7287856487 is about 85368.9433400695. The cubic root of 7287856487 is about 1938.8011588286.

The spelling of 7287856487 in words is "seven billion, two hundred eighty-seven million, eight hundred fifty-six thousand, four hundred eighty-seven".