605601021 has 4 divisors (see below), whose sum is σ = 807468032. Its totient is φ = 403734012.

The previous prime is 605601019. The next prime is 605601023. The reversal of 605601021 is 120106506.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (605601019) and next prime (605601023).

It is not a de Polignac number, because 605601021 - 2¹ = 605601019 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 (605601023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100933501 + ... + 100933506.

It is an arithmetic number, because the mean of its divisors is an integer number (201867008).

Almost surely, 2^605601021 is an apocalyptic number.

It is an amenable number.

605601021 is a deficient number, since it is larger than the sum of its proper divisors (201867011).

605601021 is a wasteful number, since it uses less digits than its factorization.

605601021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201867010.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 605601021 is about 24608.9622089189. The cubic root of 605601021 is about 846.0490319709.

Adding to 605601021 its reverse (120106506), we get a palindrome (725707527).

The spelling of 605601021 in words is "six hundred five million, six hundred one thousand, twenty-one".