7605221 has 8 divisors (see below), whose sum is σ = 8473080. Its totient is φ = 6777792.

The previous prime is 7605217. The next prime is 7605223. The reversal of 7605221 is 1225067.

It can be written as a sum of positive squares in 4 ways, for example, as 2292196 + 5313025 = 1514^2 + 2305^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7605221 - 2² = 7605217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7605223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9710 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (1059135).

Almost surely, 2^7605221 is an apocalyptic number.

It is an amenable number.

7605221 is a deficient number, since it is larger than the sum of its proper divisors (867859).

7605221 is a wasteful number, since it uses less digits than its factorization.

7605221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 7605221 is about 2757.7565157207. The cubic root of 7605221 is about 196.6545260468.

The spelling of 7605221 in words is "seven million, six hundred five thousand, two hundred twenty-one".