7221763 has 4 divisors (see below), whose sum is σ = 7227760. Its totient is φ = 7215768.

The previous prime is 7221757. The next prime is 7221769. The reversal of 7221763 is 3671227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (7221757) and next prime (7221769).

It is a cyclic number.

It is not a de Polignac number, because 7221763 - 2⁹ = 7221251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (1806940).

Almost surely, 2^7221763 is an apocalyptic number.

7221763 is a deficient number, since it is larger than the sum of its proper divisors (5997).

7221763 is a wasteful number, since it uses less digits than its factorization.

7221763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5996.

The product of its digits is 3528, while the sum is 28.

The square root of 7221763 is about 2687.3338088150. Note that the first 3 decimals coincide. The cubic root of 7221763 is about 193.2922362771.

It can be divided in two parts, 722 and 1763, that added together give a triangular number (2485 = T₇₀).

The spelling of 7221763 in words is "seven million, two hundred twenty-one thousand, seven hundred sixty-three".