7220678 has 4 divisors (see below), whose sum is σ = 10831020. Its totient is φ = 3610338.

The previous prime is 7220677. The next prime is 7220693. The reversal of 7220678 is 8760227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8760227 = 7 ⋅1251461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220671) 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 as a sum of consecutive naturals, namely, 1805168 + ... + 1805171.

It is an arithmetic number, because the mean of its divisors is an integer number (2707755).

Almost surely, 2^7220678 is an apocalyptic number.

7220678 is a deficient number, since it is larger than the sum of its proper divisors (3610342).

7220678 is a wasteful number, since it uses less digits than its factorization.

7220678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610341.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 7220678 is about 2687.1319282834. The cubic root of 7220678 is about 193.2825556964.

The spelling of 7220678 in words is "seven million, two hundred twenty thousand, six hundred seventy-eight".