66887722 has 8 divisors (see below), whose sum is σ = 109452672. Its totient is φ = 30403500.

The previous prime is 66887719. The next prime is 66887729. The reversal of 66887722 is 22778866.

66887722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (66887729) 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, 1520154 + ... + 1520197.

It is an arithmetic number, because the mean of its divisors is an integer number (13681584).

Almost surely, 2^66887722 is an apocalyptic number.

66887722 is a deficient number, since it is larger than the sum of its proper divisors (42564950).

66887722 is a wasteful number, since it uses less digits than its factorization.

66887722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040364.

The product of its digits is 451584, while the sum is 46.

The square root of 66887722 is about 8178.4914256848. The cubic root of 66887722 is about 405.9278063292.

It can be divided in two parts, 66 and 887722, that added together give a palindrome (887788).

The spelling of 66887722 in words is "sixty-six million, eight hundred eighty-seven thousand, seven hundred twenty-two".