65732985 has 32 divisors (see below), whose sum is σ = 119076480. Its totient is φ = 34392384.

The previous prime is 65732981. The next prime is 65732987. The reversal of 65732985 is 58923756.

It is a happy number.

It is not a de Polignac number, because 65732985 - 2² = 65732981 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 65732985.

It is not an unprimeable number, because it can be changed into a prime (65732981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2562 + ... + 11748.

It is an arithmetic number, because the mean of its divisors is an integer number (3721140).

Almost surely, 2^65732985 is an apocalyptic number.

It is an amenable number.

65732985 is a deficient number, since it is larger than the sum of its proper divisors (53343495).

65732985 is a wasteful number, since it uses less digits than its factorization.

65732985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9254 (or 9248 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 65732985 is about 8107.5881123797. The cubic root of 65732985 is about 403.5782797505.

The spelling of 65732985 in words is "sixty-five million, seven hundred thirty-two thousand, nine hundred eighty-five".