66306601 has 8 divisors (see below), whose sum is σ = 67320000. Its totient is φ = 65300400.

The previous prime is 66306593. The next prime is 66306623. The reversal of 66306601 is 10660366.

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

It is a cyclic number.

It is not a de Polignac number, because 66306601 - 2³ = 66306593 is a prime.

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 66306601.

It is not an unprimeable number, because it can be changed into a prime (66306101) 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, 18450 + ... + 21748.

It is an arithmetic number, because the mean of its divisors is an integer number (8415000).

Almost surely, 2^66306601 is an apocalyptic number.

It is an amenable number.

66306601 is a deficient number, since it is larger than the sum of its proper divisors (1013399).

66306601 is a wasteful number, since it uses less digits than its factorization.

66306601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 66306601 is about 8142.8865275159. The cubic root of 66306601 is about 404.7488174735.

Adding to 66306601 its reverse (10660366), we get a palindrome (76966967).

It can be divided in two parts, 6630 and 6601, that added together give a palindrome (13231).

The spelling of 66306601 in words is "sixty-six million, three hundred six thousand, six hundred one".