66395606 has 16 divisors (see below), whose sum is σ = 101222880. Its totient is φ = 32659200.

The previous prime is 66395599. The next prime is 66395639. The reversal of 66395606 is 60659366.

It is a super-2 number, since 2×66395606² = 8816752992214472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31910 + ... + 33926.

It is an arithmetic number, because the mean of its divisors is an integer number (6326430).

Almost surely, 2^66395606 is an apocalyptic number.

66395606 is a deficient number, since it is larger than the sum of its proper divisors (34827274).

66395606 is a wasteful number, since it uses less digits than its factorization.

66395606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 66395606 is about 8148.3498943038. The cubic root of 66395606 is about 404.9298379703.

It can be divided in two parts, 663 and 95606, that added together give a palindrome (96269).

The spelling of 66395606 in words is "sixty-six million, three hundred ninety-five thousand, six hundred six".