65340066 has 16 divisors (see below), whose sum is σ = 142560288. Its totient is φ = 19800000.

The previous prime is 65340059. The next prime is 65340071. The reversal of 65340066 is 66004356.

It is a Curzon number.

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, 494935 + ... + 495066.

It is an arithmetic number, because the mean of its divisors is an integer number (8910018).

Almost surely, 2^65340066 is an apocalyptic number.

65340066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

65340066 is an abundant number, since it is smaller than the sum of its proper divisors (77220222).

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

65340066 is a wasteful number, since it uses less digits than its factorization.

65340066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990017.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 65340066 is about 8083.3202336664. The cubic root of 65340066 is about 402.7725422888.

The spelling of 65340066 in words is "sixty-five million, three hundred forty thousand, sixty-six".