601616221 has 8 divisors (see below), whose sum is σ = 638066304. Its totient is φ = 566023920.

The previous prime is 601616207. The next prime is 601616227. The reversal of 601616221 is 122616106.

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 601616221 - 2²¹ = 599519069 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 (601616227) 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, 213001 + ... + 215806.

It is an arithmetic number, because the mean of its divisors is an integer number (79758288).

Almost surely, 2^601616221 is an apocalyptic number.

601616221 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

601616221 is a deficient number, since it is larger than the sum of its proper divisors (36450083).

601616221 is a wasteful number, since it uses less digits than its factorization.

601616221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428891.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 601616221 is about 24527.8662137578. The cubic root of 601616221 is about 844.1893049794.

The spelling of 601616221 in words is "six hundred one million, six hundred sixteen thousand, two hundred twenty-one".