66228035 has 4 divisors (see below), whose sum is σ = 79473648. Its totient is φ = 52982424.

The previous prime is 66227989. The next prime is 66228037. The reversal of 66228035 is 53082266.

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 66228035 - 2¹⁰ = 66227011 is a prime.

It is a super-2 number, since 2×66228035² = 8772305239922450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66227992 and 66228010.

It is not an unprimeable number, because it can be changed into a prime (66228037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622799 + ... + 6622808.

It is an arithmetic number, because the mean of its divisors is an integer number (19868412).

Almost surely, 2^66228035 is an apocalyptic number.

66228035 is a deficient number, since it is larger than the sum of its proper divisors (13245613).

66228035 is a wasteful number, since it uses less digits than its factorization.

66228035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13245612.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 66228035 is about 8138.0608869681. The cubic root of 66228035 is about 404.5888934085.

The spelling of 66228035 in words is "sixty-six million, two hundred twenty-eight thousand, thirty-five".