65065121 has 8 divisors (see below), whose sum is σ = 71280000. Its totient is φ = 58900240.

The previous prime is 65065087. The next prime is 65065123. The reversal of 65065121 is 12156056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65065121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65065123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9746 + ... + 15003.

It is an arithmetic number, because the mean of its divisors is an integer number (8910000).

Almost surely, 2^65065121 is an apocalyptic number.

It is an amenable number.

65065121 is a deficient number, since it is larger than the sum of its proper divisors (6214879).

65065121 is a wasteful number, since it uses less digits than its factorization.

65065121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24999.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 65065121 is about 8066.2953702428. The cubic root of 65065121 is about 402.2068047258.

The spelling of 65065121 in words is "sixty-five million, sixty-five thousand, one hundred twenty-one".