7066921 has 8 divisors (see below), whose sum is σ = 7286400. Its totient is φ = 6850032.

The previous prime is 7066909. The next prime is 7066931. The reversal of 7066921 is 1296607.

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

It is a cyclic number.

It is not a de Polignac number, because 7066921 - 2¹⁷ = 6935849 is a prime.

It is a pancake number, because a pancake can be divided into 7066921 parts by 3759 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7066931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5856 + ... + 6958.

It is an arithmetic number, because the mean of its divisors is an integer number (910800).

Almost surely, 2^7066921 is an apocalyptic number.

It is an amenable number.

7066921 is a deficient number, since it is larger than the sum of its proper divisors (219479).

7066921 is a wasteful number, since it uses less digits than its factorization.

7066921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7066921 is about 2658.3681084455. The cubic root of 7066921 is about 191.9007824324.

The spelling of 7066921 in words is "seven million, sixty-six thousand, nine hundred twenty-one".