6535987 has 2 divisors, whose sum is σ = 6535988. Its totient is φ = 6535986.

The previous prime is 6535927. The next prime is 6535993. The reversal of 6535987 is 7895356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6535987 - 2¹¹ = 6533939 is a prime.

It is a d-powerful number, because it can be written as 6² + 5⁷ + 3¹³ + 5⁷ + 9⁷ + 8 + 7⁴ .

It is not a weakly prime, because it can be changed into another prime (6535927) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3267993 + 3267994.

It is an arithmetic number, because the mean of its divisors is an integer number (3267994).

Almost surely, 2^6535987 is an apocalyptic number.

6535987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6535987 is an equidigital number, since it uses as much as digits as its factorization.

6535987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The square root of 6535987 is about 2556.5576465239. The cubic root of 6535987 is about 186.9693392495.

The spelling of 6535987 in words is "six million, five hundred thirty-five thousand, nine hundred eighty-seven".