65654819 has 4 divisors (see below), whose sum is σ = 65693544. Its totient is φ = 65616096.

The previous prime is 65654803. The next prime is 65654887. The reversal of 65654819 is 91845656.

65654819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 65654819 - 2⁴ = 65654803 is a prime.

It is a super-2 number, since 2×65654819² = 8621110515845522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65654819.

It is not an unprimeable number, because it can be changed into a prime (65651819) 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 3 ways as a sum of consecutive naturals, for example, 16697 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (16423386).

Almost surely, 2^65654819 is an apocalyptic number.

65654819 is a deficient number, since it is larger than the sum of its proper divisors (38725).

65654819 is a wasteful number, since it uses less digits than its factorization.

65654819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38724.

The product of its digits is 259200, while the sum is 44.

The square root of 65654819 is about 8102.7661326241. The cubic root of 65654819 is about 403.4182453711.

The spelling of 65654819 in words is "sixty-five million, six hundred fifty-four thousand, eight hundred nineteen".