611433421 has 2 divisors, whose sum is σ = 611433422. Its totient is φ = 611433420.

The previous prime is 611433413. The next prime is 611433463. The reversal of 611433421 is 124334116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362140900 + 249292521 = 19030^2 + 15789^2 .

It is a cyclic number.

It is not a de Polignac number, because 611433421 - 2³ = 611433413 is a prime.

It is equal to p_31890220 and since 611433421 and 31890220 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611433401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305716710 + 305716711.

It is an arithmetic number, because the mean of its divisors is an integer number (305716711).

Almost surely, 2^611433421 is an apocalyptic number.

It is an amenable number.

611433421 is a deficient number, since it is larger than the sum of its proper divisors (1).

611433421 is an equidigital number, since it uses as much as digits as its factorization.

611433421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 611433421 is about 24727.1798028000. The cubic root of 611433421 is about 848.7563917840.

Adding to 611433421 its reverse (124334116), we get a palindrome (735767537).

The spelling of 611433421 in words is "six hundred eleven million, four hundred thirty-three thousand, four hundred twenty-one".