65497985 has 16 divisors (see below), whose sum is σ = 90101376. Its totient is φ = 44775168.

The previous prime is 65497967. The next prime is 65498011. The reversal of 65497985 is 58979456.

It is a cyclic number.

It is not a de Polignac number, because 65497985 - 2²⁰ = 64449409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9449 + ... + 14841.

It is an arithmetic number, because the mean of its divisors is an integer number (5631336).

Almost surely, 2^65497985 is an apocalyptic number.

It is an amenable number.

65497985 is a deficient number, since it is larger than the sum of its proper divisors (24603391).

65497985 is a wasteful number, since it uses less digits than its factorization.

65497985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5752.

The product of its digits is 2721600, while the sum is 53.

The square root of 65497985 is about 8093.0825400462. The cubic root of 65497985 is about 403.0967653241.

The spelling of 65497985 in words is "sixty-five million, four hundred ninety-seven thousand, nine hundred eighty-five".