65825987 has 2 divisors, whose sum is σ = 65825988. Its totient is φ = 65825986.

The previous prime is 65825957. The next prime is 65825999. The reversal of 65825987 is 78952856.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65825987 - 2⁸ = 65825731 is a prime.

It is not a weakly prime, because it can be changed into another prime (65825917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32912993 + 32912994.

It is an arithmetic number, because the mean of its divisors is an integer number (32912994).

Almost surely, 2^65825987 is an apocalyptic number.

65825987 is a deficient number, since it is larger than the sum of its proper divisors (1).

65825987 is an equidigital number, since it uses as much as digits as its factorization.

65825987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 50.

The square root of 65825987 is about 8113.3215762720. The cubic root of 65825987 is about 403.7685236575.

The spelling of 65825987 in words is "sixty-five million, eight hundred twenty-five thousand, nine hundred eighty-seven".