5620640681 has 4 divisors (see below), whose sum is σ = 5675210112. Its totient is φ = 5566071252.

The previous prime is 5620640671. The next prime is 5620640693. The reversal of 5620640681 is 1860460265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5620640681 - 2³⁰ = 4546898857 is a prime.

It is a super-2 number, since 2×5620640681² = 63183203329824287522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5620640671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27284561 + ... + 27284766.

It is an arithmetic number, because the mean of its divisors is an integer number (1418802528).

Almost surely, 2^5620640681 is an apocalyptic number.

It is an amenable number.

5620640681 is a deficient number, since it is larger than the sum of its proper divisors (54569431).

5620640681 is a wasteful number, since it uses less digits than its factorization.

5620640681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54569430.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 5620640681 is about 74970.9322404357. The cubic root of 5620640681 is about 1777.9871073603.

The spelling of 5620640681 in words is "five billion, six hundred twenty million, six hundred forty thousand, six hundred eighty-one".