66895982 has 16 divisors (see below), whose sum is σ = 104055840. Its totient is φ = 32216352.

The previous prime is 66895957. The next prime is 66895991. The reversal of 66895982 is 28959866.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28028 + ... + 30320.

It is an arithmetic number, because the mean of its divisors is an integer number (6503490).

Almost surely, 2^66895982 is an apocalyptic number.

66895982 is a deficient number, since it is larger than the sum of its proper divisors (37159858).

66895982 is a wasteful number, since it uses less digits than its factorization.

66895982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827.

The product of its digits is 1866240, while the sum is 53.

The square root of 66895982 is about 8178.9963932013. The cubic root of 66895982 is about 405.9445150543.

The spelling of 66895982 in words is "sixty-six million, eight hundred ninety-five thousand, nine hundred eighty-two".