65985536 has 22 divisors (see below), whose sum is σ = 131908680. Its totient is φ = 32992256.

The previous prime is 65985533. The next prime is 65985539. The reversal of 65985536 is 63558956.

It is a happy number.

65985536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65985533) and next prime (65985539).

It is a super-2 number, since 2×65985536² = 8708181922414592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65985533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31196 + ... + 33243.

Almost surely, 2^65985536 is an apocalyptic number.

It is an amenable number.

65985536 is a deficient number, since it is larger than the sum of its proper divisors (65923144).

65985536 is an equidigital number, since it uses as much as digits as its factorization.

65985536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64459 (or 64441 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The square root of 65985536 is about 8123.1481581958. The cubic root of 65985536 is about 404.0944784429.

The spelling of 65985536 in words is "sixty-five million, nine hundred eighty-five thousand, five hundred thirty-six".