5615620613 has 2 divisors, whose sum is σ = 5615620614. Its totient is φ = 5615620612.

The previous prime is 5615620609. The next prime is 5615620627. The reversal of 5615620613 is 3160265165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3556094689 + 2059525924 = 59633^2 + 45382^2 .

It is a cyclic number.

It is not a de Polignac number, because 5615620613 - 2² = 5615620609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5615620603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2807810306 + 2807810307.

It is an arithmetic number, because the mean of its divisors is an integer number (2807810307).

Almost surely, 2^5615620613 is an apocalyptic number.

It is an amenable number.

5615620613 is a deficient number, since it is larger than the sum of its proper divisors (1).

5615620613 is an equidigital number, since it uses as much as digits as its factorization.

5615620613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 5615620613 is about 74937.4446655342. Note that the first 3 decimals coincide. The cubic root of 5615620613 is about 1777.4576140570.

Adding to 5615620613 its reverse (3160265165), we get a palindrome (8775885778).

The spelling of 5615620613 in words is "five billion, six hundred fifteen million, six hundred twenty thousand, six hundred thirteen".