7487857697 has 2 divisors, whose sum is σ = 7487857698. Its totient is φ = 7487857696.

The previous prime is 7487857679. The next prime is 7487857841. The reversal of 7487857697 is 7967587847.

Together with previous prime (7487857679) 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., 6650565601 + 837292096 = 81551^2 + 28936^2 .

It is a cyclic number.

It is not a de Polignac number, because 7487857697 - 2⁶ = 7487857633 is a prime.

It is a super-3 number, since 3×7487857697³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7487857297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3743928848 + 3743928849.

It is an arithmetic number, because the mean of its divisors is an integer number (3743928849).

Almost surely, 2^7487857697 is an apocalyptic number.

It is an amenable number.

7487857697 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487857697 is an equidigital number, since it uses as much as digits as its factorization.

7487857697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165957120, while the sum is 68.

The square root of 7487857697 is about 86532.4083624164. The cubic root of 7487857697 is about 1956.3769053596.

The spelling of 7487857697 in words is "seven billion, four hundred eighty-seven million, eight hundred fifty-seven thousand, six hundred ninety-seven".