7984687693 has 2 divisors, whose sum is σ = 7984687694. Its totient is φ = 7984687692.

The previous prime is 7984687657. The next prime is 7984687703. The reversal of 7984687693 is 3967864897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6402080169 + 1582607524 = 80013^2 + 39782^2 .

It is a cyclic number.

It is not a de Polignac number, because 7984687693 - 2¹³ = 7984679501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7984687093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3992343846 + 3992343847.

It is an arithmetic number, because the mean of its divisors is an integer number (3992343847).

Almost surely, 2^7984687693 is an apocalyptic number.

It is an amenable number.

7984687693 is a deficient number, since it is larger than the sum of its proper divisors (1).

7984687693 is an equidigital number, since it uses as much as digits as its factorization.

7984687693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 109734912, while the sum is 67.

The square root of 7984687693 is about 89357.0797027298. The cubic root of 7984687693 is about 1998.7231594292.

The spelling of 7984687693 in words is "seven billion, nine hundred eighty-four million, six hundred eighty-seven thousand, six hundred ninety-three".