605611421 has 4 divisors (see below), whose sum is σ = 608145600. Its totient is φ = 603077244.

The previous prime is 605611399. The next prime is 605611427. The reversal of 605611421 is 124116506.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124116506 = 2 ⋅62058253.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605611421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605611427) 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, 1266731 + ... + 1267208.

It is an arithmetic number, because the mean of its divisors is an integer number (152036400).

Almost surely, 2^605611421 is an apocalyptic number.

It is an amenable number.

605611421 is a deficient number, since it is larger than the sum of its proper divisors (2534179).

605611421 is a wasteful number, since it uses less digits than its factorization.

605611421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534178.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 605611421 is about 24609.1735131434. The cubic root of 605611421 is about 846.0538750162.

Adding to 605611421 its reverse (124116506), we get a palindrome (729727927).

The spelling of 605611421 in words is "six hundred five million, six hundred eleven thousand, four hundred twenty-one".