65985537 has 8 divisors (see below), whose sum is σ = 92611360. Its totient is φ = 41675040.

The previous prime is 65985533. The next prime is 65985539. The reversal of 65985537 is 73558956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65985537 - 2² = 65985533 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578764 + ... + 578877.

It is an arithmetic number, because the mean of its divisors is an integer number (11576420).

Almost surely, 2^65985537 is an apocalyptic number.

It is an amenable number.

65985537 is a deficient number, since it is larger than the sum of its proper divisors (26625823).

65985537 is a wasteful number, since it uses less digits than its factorization.

65985537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157663.

The product of its digits is 1134000, while the sum is 48.

The square root of 65985537 is about 8123.1482197483. The cubic root of 65985537 is about 404.0944804843.

The spelling of 65985537 in words is "sixty-five million, nine hundred eighty-five thousand, five hundred thirty-seven".