65435985 has 32 divisors (see below), whose sum is σ = 118817280. Its totient is φ = 34153344.

The previous prime is 65435971. The next prime is 65435999. The reversal of 65435985 is 58953456.

65435985 is a `hidden beast` number, since 6 + 54 + 3 + 598 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (65435971) and next prime (65435999).

It is not a de Polignac number, because 65435985 - 2⁶ = 65435921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65435985.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189 + ... + 11501.

It is an arithmetic number, because the mean of its divisors is an integer number (3713040).

Almost surely, 2^65435985 is an apocalyptic number.

It is an amenable number.

65435985 is a deficient number, since it is larger than the sum of its proper divisors (53381295).

65435985 is a wasteful number, since it uses less digits than its factorization.

65435985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10374 (or 10368 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 65435985 is about 8089.2512014401. The cubic root of 65435985 is about 402.9695355101.

The spelling of 65435985 in words is "sixty-five million, four hundred thirty-five thousand, nine hundred eighty-five".