65509386 has 16 divisors (see below), whose sum is σ = 135245568. Its totient is φ = 21132000.

The previous prime is 65509337. The next prime is 65509421. The reversal of 65509386 is 68390556.

65509386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175915 + ... + 176286.

It is an arithmetic number, because the mean of its divisors is an integer number (8452848).

Almost surely, 2^65509386 is an apocalyptic number.

65509386 is an abundant number, since it is smaller than the sum of its proper divisors (69736182).

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

65509386 is a wasteful number, since it uses less digits than its factorization.

65509386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352237.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 65509386 is about 8093.7868763639. The cubic root of 65509386 is about 403.1201525047.

The spelling of 65509386 in words is "sixty-five million, five hundred nine thousand, three hundred eighty-six".