6628565087 has 2 divisors, whose sum is σ = 6628565088. Its totient is φ = 6628565086.

The previous prime is 6628564973. The next prime is 6628565101. The reversal of 6628565087 is 7805658266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6628565087 is a prime.

It is a super-2 number, since 2×6628565087² = 87875750225190635138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6628565687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3314282543 + 3314282544.

It is an arithmetic number, because the mean of its divisors is an integer number (3314282544).

Almost surely, 2^6628565087 is an apocalyptic number.

6628565087 is a deficient number, since it is larger than the sum of its proper divisors (1).

6628565087 is an equidigital number, since it uses as much as digits as its factorization.

6628565087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The square root of 6628565087 is about 81416.0001903803. Note that the first 3 decimals coincide. The cubic root of 6628565087 is about 1878.4797094156.

The spelling of 6628565087 in words is "six billion, six hundred twenty-eight million, five hundred sixty-five thousand, eighty-seven".