65686242 has 8 divisors (see below), whose sum is σ = 131372496. Its totient is φ = 21895412.

The previous prime is 65686219. The next prime is 65686261. The reversal of 65686242 is 24268656.

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

65686242 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 65686242.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5473848 + ... + 5473859.

It is an arithmetic number, because the mean of its divisors is an integer number (16421562).

Almost surely, 2^65686242 is an apocalyptic number.

65686242 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.

65686242 is a wasteful number, since it uses less digits than its factorization.

65686242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10947712.

The product of its digits is 138240, while the sum is 39.

The square root of 65686242 is about 8104.7049298540. The cubic root of 65686242 is about 403.4825949999.

The spelling of 65686242 in words is "sixty-five million, six hundred eighty-six thousand, two hundred forty-two".