601501613 has 2 divisors, whose sum is σ = 601501614. Its totient is φ = 601501612.

The previous prime is 601501609. The next prime is 601501627. The reversal of 601501613 is 316105106.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426918244 + 174583369 = 20662^2 + 13213^2 .

It is a cyclic number.

It is not a de Polignac number, because 601501613 - 2² = 601501609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (601501603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300750806 + 300750807.

It is an arithmetic number, because the mean of its divisors is an integer number (300750807).

Almost surely, 2^601501613 is an apocalyptic number.

It is an amenable number.

601501613 is a deficient number, since it is larger than the sum of its proper divisors (1).

601501613 is an equidigital number, since it uses as much as digits as its factorization.

601501613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 601501613 is about 24525.5298209845. The cubic root of 601501613 is about 844.1356955028.

Adding to 601501613 its reverse (316105106), we get a palindrome (917606719).

The spelling of 601501613 in words is "six hundred one million, five hundred one thousand, six hundred thirteen".