215063887 has 2 divisors, whose sum is σ = 215063888. Its totient is φ = 215063886.

The previous prime is 215063881. The next prime is 215063917. The reversal of 215063887 is 788360512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215063887 - 2⁷ = 215063759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215063881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107531943 + 107531944.

It is an arithmetic number, because the mean of its divisors is an integer number (107531944).

Almost surely, 2^215063887 is an apocalyptic number.

215063887 is a deficient number, since it is larger than the sum of its proper divisors (1).

215063887 is an equidigital number, since it uses as much as digits as its factorization.

215063887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 215063887 is about 14665.0566654207. The cubic root of 215063887 is about 599.1319735260.

The spelling of 215063887 in words is "two hundred fifteen million, sixty-three thousand, eight hundred eighty-seven".