7220066 has 16 divisors (see below), whose sum is σ = 12588480. Its totient is φ = 3041520.

The previous prime is 7220033. The next prime is 7220089. The reversal of 7220066 is 6600227.

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, 3545 + ... + 5196.

It is an arithmetic number, because the mean of its divisors is an integer number (786780).

Almost surely, 2^7220066 is an apocalyptic number.

7220066 is a deficient number, since it is larger than the sum of its proper divisors (5368414).

7220066 is a wasteful number, since it uses less digits than its factorization.

7220066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8809.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 7220066 is about 2687.0180498091. The cubic root of 7220066 is about 193.2770948857.

The spelling of 7220066 in words is "seven million, two hundred twenty thousand, sixty-six".