7220546 has 8 divisors (see below), whose sum is σ = 11467980. Its totient is φ = 3397888.

The previous prime is 7220531. The next prime is 7220557. The reversal of 7220546 is 6450227.

It can be written as a sum of positive squares in 2 ways, for example, as 6817321 + 403225 = 2611^2 + 635^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106151 + ... + 106218.

Almost surely, 2^7220546 is an apocalyptic number.

7220546 is a deficient number, since it is larger than the sum of its proper divisors (4247434).

7220546 is a wasteful number, since it uses less digits than its factorization.

7220546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212388.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 7220546 is about 2687.1073666677. The cubic root of 7220546 is about 193.2813779005.

The spelling of 7220546 in words is "seven million, two hundred twenty thousand, five hundred forty-six".