7220998 has 4 divisors (see below), whose sum is σ = 10831500. Its totient is φ = 3610498.

The previous prime is 7220981. The next prime is 7220999. The reversal of 7220998 is 8990227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8990227 = 1129 ⋅7963.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1805248 + ... + 1805251.

It is an arithmetic number, because the mean of its divisors is an integer number (2707875).

Almost surely, 2^7220998 is an apocalyptic number.

7220998 is a deficient number, since it is larger than the sum of its proper divisors (3610502).

7220998 is a wasteful number, since it uses less digits than its factorization.

7220998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610501.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7220998 is about 2687.1914706623. The cubic root of 7220998 is about 193.2854108993.

The spelling of 7220998 in words is "seven million, two hundred twenty thousand, nine hundred ninety-eight".