65820194 has 16 divisors (see below), whose sum is σ = 108716256. Its totient is φ = 29637600.

The previous prime is 65820191. The next prime is 65820203. The reversal of 65820194 is 49102856.

65820194 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65820191) by changing a digit.

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, 11627 + ... + 16334.

It is an arithmetic number, because the mean of its divisors is an integer number (6794766).

Almost surely, 2^65820194 is an apocalyptic number.

65820194 is a deficient number, since it is larger than the sum of its proper divisors (42896062).

65820194 is a wasteful number, since it uses less digits than its factorization.

65820194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28081.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 65820194 is about 8112.9645629696. The cubic root of 65820194 is about 403.7566787931.

The spelling of 65820194 in words is "sixty-five million, eight hundred twenty thousand, one hundred ninety-four".