65120105 has 4 divisors (see below), whose sum is σ = 78144132. Its totient is φ = 52096080.

The previous prime is 65120089. The next prime is 65120117. The reversal of 65120105 is 50102156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38204761 + 26915344 = 6181^2 + 5188^2 .

It is not a de Polignac number, because 65120105 - 2⁴ = 65120089 is a prime.

It is a super-2 number, since 2×65120105² = 8481256150422050, which contains 22 as substring.

It is a Duffinian number.

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, 6512006 + ... + 6512015.

It is an arithmetic number, because the mean of its divisors is an integer number (19536033).

Almost surely, 2^65120105 is an apocalyptic number.

It is an amenable number.

65120105 is a deficient number, since it is larger than the sum of its proper divisors (13024027).

65120105 is a wasteful number, since it uses less digits than its factorization.

65120105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13024026.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 65120105 is about 8069.7029065511. The cubic root of 65120105 is about 402.3200692626.

The spelling of 65120105 in words is "sixty-five million, one hundred twenty thousand, one hundred five".