7201666 has 8 divisors (see below), whose sum is σ = 10869264. Its totient is φ = 3578580.

The previous prime is 7201651. The next prime is 7201673. The reversal of 7201666 is 6661027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10720 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (1358658).

Almost surely, 2^7201666 is an apocalyptic number.

7201666 is a deficient number, since it is larger than the sum of its proper divisors (3667598).

7201666 is a wasteful number, since it uses less digits than its factorization.

7201666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22256.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 7201666 is about 2683.5919958146. The cubic root of 7201666 is about 193.1127693403.

The spelling of 7201666 in words is "seven million, two hundred one thousand, six hundred sixty-six".