66960812 has 12 divisors (see below), whose sum is σ = 117264840. Its totient is φ = 33456576.

The previous prime is 66960793. The next prime is 66960823. The reversal of 66960812 is 21806966.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364 + ... + 11652.

It is an arithmetic number, because the mean of its divisors is an integer number (9772070).

Almost surely, 2^66960812 is an apocalyptic number.

It is an amenable number.

66960812 is a deficient number, since it is larger than the sum of its proper divisors (50304028).

66960812 is a wasteful number, since it uses less digits than its factorization.

66960812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11920 (or 11918 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 66960812 is about 8182.9586336483. The cubic root of 66960812 is about 406.0756085578.

The spelling of 66960812 in words is "sixty-six million, nine hundred sixty thousand, eight hundred twelve".