7221654 has 24 divisors (see below), whose sum is σ = 17069832. Its totient is φ = 2188320.

The previous prime is 7221649. The next prime is 7221661. The reversal of 7221654 is 4561227.

7221654 is a `hidden beast` number, since 7 + 2 + 2 + 1 + 654 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18039 + ... + 18434.

It is an arithmetic number, because the mean of its divisors is an integer number (711243).

Almost surely, 2^7221654 is an apocalyptic number.

7221654 is an abundant number, since it is smaller than the sum of its proper divisors (9848178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7221654 is a wasteful number, since it uses less digits than its factorization.

7221654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36492 (or 36489 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7221654 is about 2687.3135284146. The cubic root of 7221654 is about 193.2912638018.

It can be divided in two parts, 7221 and 654, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 7221654 in words is "seven million, two hundred twenty-one thousand, six hundred fifty-four".