221696602 has 8 divisors (see below), whose sum is σ = 332925012. Its totient is φ = 110721600.

The previous prime is 221696581. The next prime is 221696627. The reversal of 221696602 is 206696122.

It can be written as a sum of positive squares in 2 ways, for example, as 206180881 + 15515721 = 14359^2 + 3939^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61149 + ... + 64672.

Almost surely, 2^221696602 is an apocalyptic number.

221696602 is a deficient number, since it is larger than the sum of its proper divisors (111228410).

221696602 is a wasteful number, since it uses less digits than its factorization.

221696602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126704.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 221696602 is about 14889.4795745184. The cubic root of 221696602 is about 605.2289295960.

The spelling of 221696602 in words is "two hundred twenty-one million, six hundred ninety-six thousand, six hundred two".