65985258 has 8 divisors (see below), whose sum is σ = 131970528. Its totient is φ = 21995084.

The previous prime is 65985253. The next prime is 65985259. The reversal of 65985258 is 85258956.

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

65985258 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (65985251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5498766 + ... + 5498777.

It is an arithmetic number, because the mean of its divisors is an integer number (16496316).

Almost surely, 2^65985258 is an apocalyptic number.

65985258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65985258 is a wasteful number, since it uses less digits than its factorization.

65985258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10997548.

The product of its digits is 864000, while the sum is 48.

The square root of 65985258 is about 8123.1310465854. The cubic root of 65985258 is about 404.0939109528.

The spelling of 65985258 in words is "sixty-five million, nine hundred eighty-five thousand, two hundred fifty-eight".