5646808621 has 8 divisors (see below), whose sum is σ = 5979874680. Its totient is φ = 5313842688.

The previous prime is 5646808571. The next prime is 5646808649. The reversal of 5646808621 is 1268086465.

It can be written as a sum of positive squares in 4 ways, for example, as 2246286025 + 3400522596 = 47395^2 + 58314^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5646808621 - 2¹⁵ = 5646775853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5646809621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112825 + ... + 154993.

It is an arithmetic number, because the mean of its divisors is an integer number (747484335).

Almost surely, 2^5646808621 is an apocalyptic number.

It is an amenable number.

5646808621 is a deficient number, since it is larger than the sum of its proper divisors (333066059).

5646808621 is a wasteful number, since it uses less digits than its factorization.

5646808621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50063.

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 5646808621 is about 75145.2501559480. The cubic root of 5646808621 is about 1780.7420864258.

The spelling of 5646808621 in words is "five billion, six hundred forty-six million, eight hundred eight thousand, six hundred twenty-one".