73207666 has 24 divisors (see below), whose sum is σ = 133297920. Its totient is φ = 30009672.

The previous prime is 73207657. The next prime is 73207679. The reversal of 73207666 is 66670237.

It is a happy number.

It is a super-2 number, since 2×73207666² = 10718724722335112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13986 + ... + 18493.

It is an arithmetic number, because the mean of its divisors is an integer number (5554080).

Almost surely, 2^73207666 is an apocalyptic number.

73207666 is a deficient number, since it is larger than the sum of its proper divisors (60090254).

73207666 is a wasteful number, since it uses less digits than its factorization.

73207666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32518 (or 32511 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 73207666 is about 8556.1478481850. The cubic root of 73207666 is about 418.3298488446.

The spelling of 73207666 in words is "seventy-three million, two hundred seven thousand, six hundred sixty-six".