66223735 has 16 divisors (see below), whose sum is σ = 81289440. Its totient is φ = 51776640.

The previous prime is 66223723. The next prime is 66223771. The reversal of 66223735 is 53732266.

It is not a de Polignac number, because 66223735 - 2¹³ = 66215543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66223735.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53989 + ... + 55201.

It is an arithmetic number, because the mean of its divisors is an integer number (5080590).

Almost surely, 2^66223735 is an apocalyptic number.

66223735 is a deficient number, since it is larger than the sum of its proper divisors (15065705).

66223735 is a wasteful number, since it uses less digits than its factorization.

66223735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its digits is 45360, while the sum is 34.

The square root of 66223735 is about 8137.7966919800. The cubic root of 66223735 is about 404.5801369461.

The spelling of 66223735 in words is "sixty-six million, two hundred twenty-three thousand, seven hundred thirty-five".