620112613 has 2 divisors, whose sum is σ = 620112614. Its totient is φ = 620112612.

The previous prime is 620112611. The next prime is 620112617. The reversal of 620112613 is 316211026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619860609 + 252004 = 24897^2 + 502^2 .

It is a cyclic number.

It is not a de Polignac number, because 620112613 - 2¹ = 620112611 is a prime.

Together with 620112611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (620112611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310056306 + 310056307.

It is an arithmetic number, because the mean of its divisors is an integer number (310056307).

Almost surely, 2^620112613 is an apocalyptic number.

It is an amenable number.

620112613 is a deficient number, since it is larger than the sum of its proper divisors (1).

620112613 is an equidigital number, since it uses as much as digits as its factorization.

620112613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 620112613 is about 24902.0604167607. The cubic root of 620112613 is about 852.7535217183.

Adding to 620112613 its reverse (316211026), we get a palindrome (936323639).

The spelling of 620112613 in words is "six hundred twenty million, one hundred twelve thousand, six hundred thirteen".