5613623681 has 2 divisors, whose sum is σ = 5613623682. Its totient is φ = 5613623680.

The previous prime is 5613623677. The next prime is 5613623689. The reversal of 5613623681 is 1863263165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4442889025 + 1170734656 = 66655^2 + 34216^2 .

It is a cyclic number.

It is not a de Polignac number, because 5613623681 - 2² = 5613623677 is a prime.

It is a super-3 number, since 3×5613623681³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (5613623689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2806811840 + 2806811841.

It is an arithmetic number, because the mean of its divisors is an integer number (2806811841).

Almost surely, 2^5613623681 is an apocalyptic number.

It is an amenable number.

5613623681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5613623681 is an equidigital number, since it uses as much as digits as its factorization.

5613623681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 5613623681 is about 74924.1194876523. The cubic root of 5613623681 is about 1777.2468992759.

The spelling of 5613623681 in words is "five billion, six hundred thirteen million, six hundred twenty-three thousand, six hundred eighty-one".