66395996 has 12 divisors (see below), whose sum is σ = 116424840. Its totient is φ = 33131760.

The previous prime is 66395983. The next prime is 66396023. The reversal of 66395996 is 69959366.

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 3 ways as a sum of consecutive naturals, for example, 14270 + ... + 18341.

It is an arithmetic number, because the mean of its divisors is an integer number (9702070).

Almost surely, 2^66395996 is an apocalyptic number.

It is an amenable number.

66395996 is a deficient number, since it is larger than the sum of its proper divisors (50028844).

66395996 is a wasteful number, since it uses less digits than its factorization.

66395996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33124 (or 33122 counting only the distinct ones).

The product of its digits is 2361960, while the sum is 53.

The square root of 66395996 is about 8148.3738254943. The cubic root of 66395996 is about 404.9306308056.

The spelling of 66395996 in words is "sixty-six million, three hundred ninety-five thousand, nine hundred ninety-six".