65105992 has 32 divisors (see below), whose sum is σ = 141091200. Its totient is φ = 27586944.

The previous prime is 65105987. The next prime is 65106001. The reversal of 65105992 is 29950156.

It is an unprimeable number.

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, 1548 + ... + 11515.

It is an arithmetic number, because the mean of its divisors is an integer number (4409100).

Almost surely, 2^65105992 is an apocalyptic number.

It is an amenable number.

65105992 is an abundant number, since it is smaller than the sum of its proper divisors (75985208).

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

65105992 is a wasteful number, since it uses less digits than its factorization.

65105992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13165 (or 13161 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 65105992 is about 8068.8284155756. The cubic root of 65105992 is about 402.2910032091.

The spelling of 65105992 in words is "sixty-five million, one hundred five thousand, nine hundred ninety-two".