7690221 has 56 divisors (see below), whose sum is σ = 14480064. Its totient is φ = 3965760.

The previous prime is 7690181. The next prime is 7690259. The reversal of 7690221 is 1220967.

It is not a de Polignac number, because 7690221 - 2⁶ = 7690157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7690261) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 56065 + ... + 56201.

Almost surely, 2^7690221 is an apocalyptic number.

It is an amenable number.

7690221 is a deficient number, since it is larger than the sum of its proper divisors (6789843).

7690221 is a wasteful number, since it uses less digits than its factorization.

7690221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 7690221 is about 2773.1247718053. The cubic root of 7690221 is about 197.3844519863.

The spelling of 7690221 in words is "seven million, six hundred ninety thousand, two hundred twenty-one".