601066421 has 2 divisors, whose sum is σ = 601066422. Its totient is φ = 601066420.

The previous prime is 601066391. The next prime is 601066423. The reversal of 601066421 is 124660106.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369600625 + 231465796 = 19225^2 + 15214^2 .

It is a cyclic number.

It is not a de Polignac number, because 601066421 - 2¹⁸ = 600804277 is a prime.

It is a super-2 number, since 2×601066421² = 722561684907498482, which contains 22 as substring.

Together with 601066423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601066423) 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, 300533210 + 300533211.

It is an arithmetic number, because the mean of its divisors is an integer number (300533211).

Almost surely, 2^601066421 is an apocalyptic number.

It is an amenable number.

601066421 is a deficient number, since it is larger than the sum of its proper divisors (1).

601066421 is an equidigital number, since it uses as much as digits as its factorization.

601066421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 601066421 is about 24516.6559913868. The cubic root of 601066421 is about 843.9320663822.

The spelling of 601066421 in words is "six hundred one million, sixty-six thousand, four hundred twenty-one".