73966666 has 16 divisors (see below), whose sum is σ = 117365184. Its totient is φ = 34889184.

The previous prime is 73966649. The next prime is 73966679. The reversal of 73966666 is 66666937.

It is a happy 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, 7656 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (7335324).

Almost surely, 2^73966666 is an apocalyptic number.

73966666 is a deficient number, since it is larger than the sum of its proper divisors (43398518).

73966666 is a wasteful number, since it uses less digits than its factorization.

73966666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22125.

The product of its digits is 1469664, while the sum is 49.

The square root of 73966666 is about 8600.3875494073. The cubic root of 73966666 is about 419.7705965673.

The spelling of 73966666 in words is "seventy-three million, nine hundred sixty-six thousand, six hundred sixty-six".