7280457887 has 2 divisors, whose sum is σ = 7280457888. Its totient is φ = 7280457886.

The previous prime is 7280457823. The next prime is 7280457889. The reversal of 7280457887 is 7887540827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7280457887 - 2⁶ = 7280457823 is a prime.

Together with 7280457889, 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 (7280457889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3640228943 + 3640228944.

It is an arithmetic number, because the mean of its divisors is an integer number (3640228944).

Almost surely, 2^7280457887 is an apocalyptic number.

7280457887 is a deficient number, since it is larger than the sum of its proper divisors (1).

7280457887 is an equidigital number, since it uses as much as digits as its factorization.

7280457887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7024640, while the sum is 56.

The square root of 7280457887 is about 85325.5992478225. The cubic root of 7280457887 is about 1938.1448492014.

The spelling of 7280457887 in words is "seven billion, two hundred eighty million, four hundred fifty-seven thousand, eight hundred eighty-seven".