66228801 has 8 divisors (see below), whose sum is σ = 88556640. Its totient is φ = 44026752.

The previous prime is 66228793. The next prime is 66228809. The reversal of 66228801 is 10882266.

It is an interprime number because it is at equal distance from previous prime (66228793) and next prime (66228809).

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

It is not a de Polignac number, because 66228801 - 2³ = 66228793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66228809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30211 + ... + 32328.

It is an arithmetic number, because the mean of its divisors is an integer number (11069580).

Almost surely, 2^66228801 is an apocalyptic number.

It is an amenable number.

66228801 is a deficient number, since it is larger than the sum of its proper divisors (22327839).

66228801 is a wasteful number, since it uses less digits than its factorization.

66228801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62895.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 66228801 is about 8138.1079496404. The cubic root of 66228801 is about 404.5904532409.

The spelling of 66228801 in words is "sixty-six million, two hundred twenty-eight thousand, eight hundred one".