7221698 has 16 divisors (see below), whose sum is σ = 12199680. Its totient is φ = 3176400.

The previous prime is 7221689. The next prime is 7221707. The reversal of 7221698 is 8961227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7221689) and next prime (7221707).

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 7 ways as a sum of consecutive naturals, for example, 4613 + ... + 5976.

It is an arithmetic number, because the mean of its divisors is an integer number (762480).

Almost surely, 2^7221698 is an apocalyptic number.

7221698 is a deficient number, since it is larger than the sum of its proper divisors (4977982).

7221698 is a wasteful number, since it uses less digits than its factorization.

7221698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633.

The product of its digits is 12096, while the sum is 35.

The square root of 7221698 is about 2687.3217150166. The cubic root of 7221698 is about 193.2916563618.

The spelling of 7221698 in words is "seven million, two hundred twenty-one thousand, six hundred ninety-eight".