7200778087 has 2 divisors, whose sum is σ = 7200778088. Its totient is φ = 7200778086.

The previous prime is 7200778007. The next prime is 7200778103. The reversal of 7200778087 is 7808770027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7200778087 - 2⁷ = 7200777959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7200778007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3600389043 + 3600389044.

It is an arithmetic number, because the mean of its divisors is an integer number (3600389044).

Almost surely, 2^7200778087 is an apocalyptic number.

7200778087 is a deficient number, since it is larger than the sum of its proper divisors (1).

7200778087 is an equidigital number, since it uses as much as digits as its factorization.

7200778087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 307328, while the sum is 46.

The square root of 7200778087 is about 84857.3985401391. The cubic root of 7200778087 is about 1931.0483254778.

The spelling of 7200778087 in words is "seven billion, two hundred million, seven hundred seventy-eight thousand, eighty-seven".