6626887 has 2 divisors, whose sum is σ = 6626888. Its totient is φ = 6626886.

The previous prime is 6626881. The next prime is 6626941. The reversal of 6626887 is 7886266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6626887 - 2¹⁹ = 6102599 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6626881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3313443 + 3313444.

It is an arithmetic number, because the mean of its divisors is an integer number (3313444).

Almost surely, 2^6626887 is an apocalyptic number.

6626887 is a deficient number, since it is larger than the sum of its proper divisors (1).

6626887 is an equidigital number, since it uses as much as digits as its factorization.

6626887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 6626887 is about 2574.2740724328. The cubic root of 6626887 is about 187.8321177447.

The spelling of 6626887 in words is "six million, six hundred twenty-six thousand, eight hundred eighty-seven".