611421 has 4 divisors (see below), whose sum is σ = 815232. Its totient is φ = 407612.

The previous prime is 611419. The next prime is 611441. The reversal of 611421 is 124116.

611421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 611421 - 2¹ = 611419 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 611421.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 611421.

It is not an unprimeable number, because it can be changed into a prime (611411) 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, 101901 + ... + 101906.

It is an arithmetic number, because the mean of its divisors is an integer number (203808).

2⁶¹¹⁴²¹ is an apocalyptic number.

It is an amenable number.

611421 is a deficient number, since it is larger than the sum of its proper divisors (203811).

611421 is a wasteful number, since it uses less digits than its factorization.

611421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203810.

The product of its digits is 48, while the sum is 15.

The square root of 611421 is about 781.9341404492. The cubic root of 611421 is about 84.8750644375.

Adding to 611421 its reverse (124116), we get a palindrome (735537).

The spelling of 611421 in words is "six hundred eleven thousand, four hundred twenty-one".